Cập nhật mọi thông tin được công bố tại Hội nghị thượng đỉnh Firebase và tìm hiểu cách Firebase có thể giúp bạn đẩy nhanh quá trình phát triển ứng dụng và tự tin chạy ứng dụng của mình. Tìm hiểu thêm
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Dữ liệu mẫu Phiên bản web 9 Phiên bản web 8 Truy vấn đơn giản Phiên bản web 9 Phiên bản web 8 Phiên bản web 9 Phiên bản web 8 Thực hiện một truy vấn Phiên bản web 9 Phiên bản web 8 Toán tử truy vấn Phiên bản web 9 Phiên bản web 8 Không bằng (let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift82) Phiên bản web 9 Phiên bản web 8 Thành viên mảng Phiên bản web 9 Phiên bản web 8 let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift85, let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift86 và let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift84 Phiên bản web 9 Phiên bản web 8 Phiên bản web 9 Phiên bản web 8 Phiên bản web 9 Phiên bản web 8 Phiên bản web 9 Phiên bản web 8 truy vấn phức hợp Phiên bản web 9 Phiên bản web 8 Phiên bản web 9 Phiên bản web 8 Phiên bản web 9 Phiên bản web 8 Truy vấn nhóm bộ sưu tập Phiên bản web 9 Phiên bản web 8 Phiên bản web 9 Phiên bản web 8
căn cứ hỏa lực Tài liệu lò sưởi Xây dựng Sắp xếp ngăn nắp với các bộ sưu tập Lưu và phân loại nội dung dựa trên sở thích của bạn
Cloud Firestore cung cấp chức năng truy vấn mạnh mẽ để chỉ định tài liệu nào bạn muốn truy xuất từ bộ sưu tập hoặc nhóm bộ sưu tập. Các truy vấn này cũng có thể được sử dụng với
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
72 hoặc let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
73, như được mô tả trong Lấy dữ liệu và Nhận các bản cập nhật theo thời gian thựcGhi chú. Mặc dù các mẫu mã bao gồm nhiều ngôn ngữ, văn bản giải thích các mẫu đề cập đến tên phương thức Web. Dữ liệu mẫu Để bắt đầu, hãy viết một số dữ liệu về các thành phố để chúng tôi có thể xem xét các cách khác nhau để đọc lại
Phiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. import { collection, doc, setDoc } from "firebase/firestore";
const citiesRef = collection(db, "cities");
await setDoc(doc(citiesRef, "SF"), {
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
await setDoc(doc(citiesRef, "LA"), {
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
await setDoc(doc(citiesRef, "DC"), {
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
await setDoc(doc(citiesRef, "TOK"), {
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
await setDoc(doc(citiesRef, "BJ"), {
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });example_data.js
Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
Java CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
Kotlin+KTX val cities = db.collection("cities")
val data1 = hashMapOf(
"name" to "San Francisco",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 860000,
"regions" to listOf("west_coast", "norcal")
)
cities.document("SF").set(data1)
val data2 = hashMapOf(
"name" to "Los Angeles",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 3900000,
"regions" to listOf("west_coast", "socal")
)
cities.document("LA").set(data2)
val data3 = hashMapOf(
"name" to "Washington D.C.",
"state" to null,
"country" to "USA",
"capital" to true,
"population" to 680000,
"regions" to listOf("east_coast")
)
cities.document("DC").set(data3)
val data4 = hashMapOf(
"name" to "Tokyo",
"state" to null,
"country" to "Japan",
"capital" to true,
"population" to 9000000,
"regions" to listOf("kanto", "honshu")
)
cities.document("TOK").set(data4)
val data5 = hashMapOf(
"name" to "Beijing",
"state" to null,
"country" to "China",
"capital" to true,
"population" to 21500000,
"regions" to listOf("jingjinji", "hebei")
)
cities.document("BJ").set(data5)DocSnippets.kt
Java
CollectionReference cities = db.collection("cities");
List<ApiFuture<WriteResult>> futures = new ArrayList<>();
futures.add(
cities
.document("SF")
.set(
new City(
"San Francisco",
"CA",
"USA",
false,
860000L,
Arrays.asList("west_coast", "norcal"))));
futures.add(
cities
.document("LA")
.set(
new City(
"Los Angeles",
"CA",
"USA",
false,
3900000L,
Arrays.asList("west_coast", "socal"))));
futures.add(
cities
.document("DC")
.set(
new City(
"Washington D.C.", null, "USA", true, 680000L, Arrays.asList("east_coast"))));
futures.add(
cities
.document("TOK")
.set(
new City(
"Tokyo", null, "Japan", true, 9000000L, Arrays.asList("kanto", "honshu"))));
futures.add(
cities
.document("BJ")
.set(
new City(
"Beijing",
null,
"China",
true,
21500000L,
Arrays.asList("jingjinji", "hebei"))));
// (optional) block on documents successfully added
ApiFutures.allAsList(futures).get();QueryDataSnippets.java
con trăn let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
0let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
1con trăn var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
0var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
1C++ var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
2Nút. js
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
3Đi
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
4PHP
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
5Đoàn kết var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
6C#
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
7hồng ngọc
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
8Truy vấn đơn giản Truy vấn sau đây trả về tất cả các thành phố có trạng thái
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
74Phiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
9Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
0Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
1Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
2Java let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
3Kotlin+KTX let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
4phi tiêu let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
5Java
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
6
con trăn
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
7con trăn
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
8C++ let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
9Nút. js
FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
0Đi
FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
1PHP
FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
2Đoàn kết FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
3C#
FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
4hồng ngọc
FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
5Truy vấn sau đây trả về tất cả các thành phố thủ đô
Phiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
6Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
7Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
8Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
9Java CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
0Kotlin+KTX CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
1phi tiêu CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
2Java
CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
3
con trăn
CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
4con trăn
CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
5C++ CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
6Nút. js
CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
7Đi
CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
8PHP
CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
9Đoàn kết val cities = db.collection("cities")
val data1 = hashMapOf(
"name" to "San Francisco",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 860000,
"regions" to listOf("west_coast", "norcal")
)
cities.document("SF").set(data1)
val data2 = hashMapOf(
"name" to "Los Angeles",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 3900000,
"regions" to listOf("west_coast", "socal")
)
cities.document("LA").set(data2)
val data3 = hashMapOf(
"name" to "Washington D.C.",
"state" to null,
"country" to "USA",
"capital" to true,
"population" to 680000,
"regions" to listOf("east_coast")
)
cities.document("DC").set(data3)
val data4 = hashMapOf(
"name" to "Tokyo",
"state" to null,
"country" to "Japan",
"capital" to true,
"population" to 9000000,
"regions" to listOf("kanto", "honshu")
)
cities.document("TOK").set(data4)
val data5 = hashMapOf(
"name" to "Beijing",
"state" to null,
"country" to "China",
"capital" to true,
"population" to 21500000,
"regions" to listOf("jingjinji", "hebei")
)
cities.document("BJ").set(data5)DocSnippets.kt
0C#
val cities = db.collection("cities")
val data1 = hashMapOf(
"name" to "San Francisco",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 860000,
"regions" to listOf("west_coast", "norcal")
)
cities.document("SF").set(data1)
val data2 = hashMapOf(
"name" to "Los Angeles",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 3900000,
"regions" to listOf("west_coast", "socal")
)
cities.document("LA").set(data2)
val data3 = hashMapOf(
"name" to "Washington D.C.",
"state" to null,
"country" to "USA",
"capital" to true,
"population" to 680000,
"regions" to listOf("east_coast")
)
cities.document("DC").set(data3)
val data4 = hashMapOf(
"name" to "Tokyo",
"state" to null,
"country" to "Japan",
"capital" to true,
"population" to 9000000,
"regions" to listOf("kanto", "honshu")
)
cities.document("TOK").set(data4)
val data5 = hashMapOf(
"name" to "Beijing",
"state" to null,
"country" to "China",
"capital" to true,
"population" to 21500000,
"regions" to listOf("jingjinji", "hebei")
)
cities.document("BJ").set(data5)DocSnippets.kt
1hồng ngọc
val cities = db.collection("cities")
val data1 = hashMapOf(
"name" to "San Francisco",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 860000,
"regions" to listOf("west_coast", "norcal")
)
cities.document("SF").set(data1)
val data2 = hashMapOf(
"name" to "Los Angeles",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 3900000,
"regions" to listOf("west_coast", "socal")
)
cities.document("LA").set(data2)
val data3 = hashMapOf(
"name" to "Washington D.C.",
"state" to null,
"country" to "USA",
"capital" to true,
"population" to 680000,
"regions" to listOf("east_coast")
)
cities.document("DC").set(data3)
val data4 = hashMapOf(
"name" to "Tokyo",
"state" to null,
"country" to "Japan",
"capital" to true,
"population" to 9000000,
"regions" to listOf("kanto", "honshu")
)
cities.document("TOK").set(data4)
val data5 = hashMapOf(
"name" to "Beijing",
"state" to null,
"country" to "China",
"capital" to true,
"population" to 21500000,
"regions" to listOf("jingjinji", "hebei")
)
cities.document("BJ").set(data5)DocSnippets.kt
2
Thực hiện một truy vấn Sau khi tạo đối tượng truy vấn, sử dụng hàm
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
72 để lấy kết quảPhiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. val cities = db.collection("cities")
val data1 = hashMapOf(
"name" to "San Francisco",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 860000,
"regions" to listOf("west_coast", "norcal")
)
cities.document("SF").set(data1)
val data2 = hashMapOf(
"name" to "Los Angeles",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 3900000,
"regions" to listOf("west_coast", "socal")
)
cities.document("LA").set(data2)
val data3 = hashMapOf(
"name" to "Washington D.C.",
"state" to null,
"country" to "USA",
"capital" to true,
"population" to 680000,
"regions" to listOf("east_coast")
)
cities.document("DC").set(data3)
val data4 = hashMapOf(
"name" to "Tokyo",
"state" to null,
"country" to "Japan",
"capital" to true,
"population" to 9000000,
"regions" to listOf("kanto", "honshu")
)
cities.document("TOK").set(data4)
val data5 = hashMapOf(
"name" to "Beijing",
"state" to null,
"country" to "China",
"capital" to true,
"population" to 21500000,
"regions" to listOf("jingjinji", "hebei")
)
cities.document("BJ").set(data5)DocSnippets.kt
3Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. val cities = db.collection("cities")
val data1 = hashMapOf(
"name" to "San Francisco",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 860000,
"regions" to listOf("west_coast", "norcal")
)
cities.document("SF").set(data1)
val data2 = hashMapOf(
"name" to "Los Angeles",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 3900000,
"regions" to listOf("west_coast", "socal")
)
cities.document("LA").set(data2)
val data3 = hashMapOf(
"name" to "Washington D.C.",
"state" to null,
"country" to "USA",
"capital" to true,
"population" to 680000,
"regions" to listOf("east_coast")
)
cities.document("DC").set(data3)
val data4 = hashMapOf(
"name" to "Tokyo",
"state" to null,
"country" to "Japan",
"capital" to true,
"population" to 9000000,
"regions" to listOf("kanto", "honshu")
)
cities.document("TOK").set(data4)
val data5 = hashMapOf(
"name" to "Beijing",
"state" to null,
"country" to "China",
"capital" to true,
"population" to 21500000,
"regions" to listOf("jingjinji", "hebei")
)
cities.document("BJ").set(data5)DocSnippets.kt
4Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
val cities = db.collection("cities")
val data1 = hashMapOf(
"name" to "San Francisco",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 860000,
"regions" to listOf("west_coast", "norcal")
)
cities.document("SF").set(data1)
val data2 = hashMapOf(
"name" to "Los Angeles",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 3900000,
"regions" to listOf("west_coast", "socal")
)
cities.document("LA").set(data2)
val data3 = hashMapOf(
"name" to "Washington D.C.",
"state" to null,
"country" to "USA",
"capital" to true,
"population" to 680000,
"regions" to listOf("east_coast")
)
cities.document("DC").set(data3)
val data4 = hashMapOf(
"name" to "Tokyo",
"state" to null,
"country" to "Japan",
"capital" to true,
"population" to 9000000,
"regions" to listOf("kanto", "honshu")
)
cities.document("TOK").set(data4)
val data5 = hashMapOf(
"name" to "Beijing",
"state" to null,
"country" to "China",
"capital" to true,
"population" to 21500000,
"regions" to listOf("jingjinji", "hebei")
)
cities.document("BJ").set(data5)DocSnippets.kt
5Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
val cities = db.collection("cities")
val data1 = hashMapOf(
"name" to "San Francisco",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 860000,
"regions" to listOf("west_coast", "norcal")
)
cities.document("SF").set(data1)
val data2 = hashMapOf(
"name" to "Los Angeles",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 3900000,
"regions" to listOf("west_coast", "socal")
)
cities.document("LA").set(data2)
val data3 = hashMapOf(
"name" to "Washington D.C.",
"state" to null,
"country" to "USA",
"capital" to true,
"population" to 680000,
"regions" to listOf("east_coast")
)
cities.document("DC").set(data3)
val data4 = hashMapOf(
"name" to "Tokyo",
"state" to null,
"country" to "Japan",
"capital" to true,
"population" to 9000000,
"regions" to listOf("kanto", "honshu")
)
cities.document("TOK").set(data4)
val data5 = hashMapOf(
"name" to "Beijing",
"state" to null,
"country" to "China",
"capital" to true,
"population" to 21500000,
"regions" to listOf("jingjinji", "hebei")
)
cities.document("BJ").set(data5)DocSnippets.kt
6Java val cities = db.collection("cities")
val data1 = hashMapOf(
"name" to "San Francisco",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 860000,
"regions" to listOf("west_coast", "norcal")
)
cities.document("SF").set(data1)
val data2 = hashMapOf(
"name" to "Los Angeles",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 3900000,
"regions" to listOf("west_coast", "socal")
)
cities.document("LA").set(data2)
val data3 = hashMapOf(
"name" to "Washington D.C.",
"state" to null,
"country" to "USA",
"capital" to true,
"population" to 680000,
"regions" to listOf("east_coast")
)
cities.document("DC").set(data3)
val data4 = hashMapOf(
"name" to "Tokyo",
"state" to null,
"country" to "Japan",
"capital" to true,
"population" to 9000000,
"regions" to listOf("kanto", "honshu")
)
cities.document("TOK").set(data4)
val data5 = hashMapOf(
"name" to "Beijing",
"state" to null,
"country" to "China",
"capital" to true,
"population" to 21500000,
"regions" to listOf("jingjinji", "hebei")
)
cities.document("BJ").set(data5)DocSnippets.kt
7Kotlin+KTX val cities = db.collection("cities")
val data1 = hashMapOf(
"name" to "San Francisco",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 860000,
"regions" to listOf("west_coast", "norcal")
)
cities.document("SF").set(data1)
val data2 = hashMapOf(
"name" to "Los Angeles",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 3900000,
"regions" to listOf("west_coast", "socal")
)
cities.document("LA").set(data2)
val data3 = hashMapOf(
"name" to "Washington D.C.",
"state" to null,
"country" to "USA",
"capital" to true,
"population" to 680000,
"regions" to listOf("east_coast")
)
cities.document("DC").set(data3)
val data4 = hashMapOf(
"name" to "Tokyo",
"state" to null,
"country" to "Japan",
"capital" to true,
"population" to 9000000,
"regions" to listOf("kanto", "honshu")
)
cities.document("TOK").set(data4)
val data5 = hashMapOf(
"name" to "Beijing",
"state" to null,
"country" to "China",
"capital" to true,
"population" to 21500000,
"regions" to listOf("jingjinji", "hebei")
)
cities.document("BJ").set(data5)DocSnippets.kt
8phi tiêu val cities = db.collection("cities")
val data1 = hashMapOf(
"name" to "San Francisco",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 860000,
"regions" to listOf("west_coast", "norcal")
)
cities.document("SF").set(data1)
val data2 = hashMapOf(
"name" to "Los Angeles",
"state" to "CA",
"country" to "USA",
"capital" to false,
"population" to 3900000,
"regions" to listOf("west_coast", "socal")
)
cities.document("LA").set(data2)
val data3 = hashMapOf(
"name" to "Washington D.C.",
"state" to null,
"country" to "USA",
"capital" to true,
"population" to 680000,
"regions" to listOf("east_coast")
)
cities.document("DC").set(data3)
val data4 = hashMapOf(
"name" to "Tokyo",
"state" to null,
"country" to "Japan",
"capital" to true,
"population" to 9000000,
"regions" to listOf("kanto", "honshu")
)
cities.document("TOK").set(data4)
val data5 = hashMapOf(
"name" to "Beijing",
"state" to null,
"country" to "China",
"capital" to true,
"population" to 21500000,
"regions" to listOf("jingjinji", "hebei")
)
cities.document("BJ").set(data5)DocSnippets.kt
9Java
final cities = db.collection("cities");
final data1 = <String, dynamic>{
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
};
cities.doc("SF").set(data1);
final data2 = <String, dynamic>{
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"],
};
cities.doc("LA").set(data2);
final data3 = <String, dynamic>{
"name": "Washington D.C.",
"state": null,
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
};
cities.doc("DC").set(data3);
final data4 = <String, dynamic>{
"name": "Tokyo",
"state": null,
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
};
cities.doc("TOK").set(data4);
final data5 = <String, dynamic>{
"name": "Beijing",
"state": null,
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"],
};
cities.doc("BJ").set(data5);firestore.dart
0
con trăn
final cities = db.collection("cities");
final data1 = <String, dynamic>{
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
};
cities.doc("SF").set(data1);
final data2 = <String, dynamic>{
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"],
};
cities.doc("LA").set(data2);
final data3 = <String, dynamic>{
"name": "Washington D.C.",
"state": null,
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
};
cities.doc("DC").set(data3);
final data4 = <String, dynamic>{
"name": "Tokyo",
"state": null,
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
};
cities.doc("TOK").set(data4);
final data5 = <String, dynamic>{
"name": "Beijing",
"state": null,
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"],
};
cities.doc("BJ").set(data5);firestore.dart
1con trăn
final cities = db.collection("cities");
final data1 = <String, dynamic>{
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
};
cities.doc("SF").set(data1);
final data2 = <String, dynamic>{
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"],
};
cities.doc("LA").set(data2);
final data3 = <String, dynamic>{
"name": "Washington D.C.",
"state": null,
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
};
cities.doc("DC").set(data3);
final data4 = <String, dynamic>{
"name": "Tokyo",
"state": null,
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
};
cities.doc("TOK").set(data4);
final data5 = <String, dynamic>{
"name": "Beijing",
"state": null,
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"],
};
cities.doc("BJ").set(data5);firestore.dart
2C++ final cities = db.collection("cities");
final data1 = <String, dynamic>{
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
};
cities.doc("SF").set(data1);
final data2 = <String, dynamic>{
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"],
};
cities.doc("LA").set(data2);
final data3 = <String, dynamic>{
"name": "Washington D.C.",
"state": null,
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
};
cities.doc("DC").set(data3);
final data4 = <String, dynamic>{
"name": "Tokyo",
"state": null,
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
};
cities.doc("TOK").set(data4);
final data5 = <String, dynamic>{
"name": "Beijing",
"state": null,
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"],
};
cities.doc("BJ").set(data5);firestore.dart
3Nút. js
final cities = db.collection("cities");
final data1 = <String, dynamic>{
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
};
cities.doc("SF").set(data1);
final data2 = <String, dynamic>{
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"],
};
cities.doc("LA").set(data2);
final data3 = <String, dynamic>{
"name": "Washington D.C.",
"state": null,
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
};
cities.doc("DC").set(data3);
final data4 = <String, dynamic>{
"name": "Tokyo",
"state": null,
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
};
cities.doc("TOK").set(data4);
final data5 = <String, dynamic>{
"name": "Beijing",
"state": null,
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"],
};
cities.doc("BJ").set(data5);firestore.dart
4Đi
final cities = db.collection("cities");
final data1 = <String, dynamic>{
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
};
cities.doc("SF").set(data1);
final data2 = <String, dynamic>{
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"],
};
cities.doc("LA").set(data2);
final data3 = <String, dynamic>{
"name": "Washington D.C.",
"state": null,
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
};
cities.doc("DC").set(data3);
final data4 = <String, dynamic>{
"name": "Tokyo",
"state": null,
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
};
cities.doc("TOK").set(data4);
final data5 = <String, dynamic>{
"name": "Beijing",
"state": null,
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"],
};
cities.doc("BJ").set(data5);firestore.dart
5PHP PHP Để biết thêm về cách cài đặt và tạo ứng dụng khách Cloud Firestore, hãy tham khảo Thư viện ứng dụng khách Cloud Firestore
final cities = db.collection("cities");
final data1 = <String, dynamic>{
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
};
cities.doc("SF").set(data1);
final data2 = <String, dynamic>{
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"],
};
cities.doc("LA").set(data2);
final data3 = <String, dynamic>{
"name": "Washington D.C.",
"state": null,
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
};
cities.doc("DC").set(data3);
final data4 = <String, dynamic>{
"name": "Tokyo",
"state": null,
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
};
cities.doc("TOK").set(data4);
final data5 = <String, dynamic>{
"name": "Beijing",
"state": null,
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"],
};
cities.doc("BJ").set(data5);firestore.dart
6Đoàn kết final cities = db.collection("cities");
final data1 = <String, dynamic>{
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
};
cities.doc("SF").set(data1);
final data2 = <String, dynamic>{
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"],
};
cities.doc("LA").set(data2);
final data3 = <String, dynamic>{
"name": "Washington D.C.",
"state": null,
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
};
cities.doc("DC").set(data3);
final data4 = <String, dynamic>{
"name": "Tokyo",
"state": null,
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
};
cities.doc("TOK").set(data4);
final data5 = <String, dynamic>{
"name": "Beijing",
"state": null,
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"],
};
cities.doc("BJ").set(data5);firestore.dart
7C# C# Để biết thêm về cách cài đặt và tạo ứng dụng khách Cloud Firestore, hãy tham khảo Thư viện ứng dụng khách Cloud Firestore
final cities = db.collection("cities");
final data1 = <String, dynamic>{
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
};
cities.doc("SF").set(data1);
final data2 = <String, dynamic>{
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"],
};
cities.doc("LA").set(data2);
final data3 = <String, dynamic>{
"name": "Washington D.C.",
"state": null,
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
};
cities.doc("DC").set(data3);
final data4 = <String, dynamic>{
"name": "Tokyo",
"state": null,
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
};
cities.doc("TOK").set(data4);
final data5 = <String, dynamic>{
"name": "Beijing",
"state": null,
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"],
};
cities.doc("BJ").set(data5);firestore.dart
8hồng ngọc
final cities = db.collection("cities");
final data1 = <String, dynamic>{
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
};
cities.doc("SF").set(data1);
final data2 = <String, dynamic>{
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"],
};
cities.doc("LA").set(data2);
final data3 = <String, dynamic>{
"name": "Washington D.C.",
"state": null,
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
};
cities.doc("DC").set(data3);
final data4 = <String, dynamic>{
"name": "Tokyo",
"state": null,
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
};
cities.doc("TOK").set(data4);
final data5 = <String, dynamic>{
"name": "Beijing",
"state": null,
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"],
};
cities.doc("BJ").set(data5);firestore.dart
9Xem Lấy dữ liệu để biết thêm thông tin về truy xuất kết quả truy vấn. Bạn cũng có thể thêm người nghe vào truy vấn để nhận kết quả hiện tại và lắng nghe các bản cập nhật trong tương lai
Toán tử truy vấn Phương thức
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
76 nhận ba tham số. một trường để lọc, một toán tử so sánh và một giá trị. Cloud Firestore hỗ trợ các toán tử so sánh saulet citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
77 ít hơnlet citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
78 nhỏ hơn hoặc bằnglet citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
79 bằnglet citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
80 lớn hơnlet citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
81 lớn hơn hoặc bằng Đối với Apple, Android và Java, toán tử so sánh được đặt tên rõ ràng trong phương thức. Ví dụ
Phiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. CollectionReference cities = db.collection("cities");
List<ApiFuture<WriteResult>> futures = new ArrayList<>();
futures.add(
cities
.document("SF")
.set(
new City(
"San Francisco",
"CA",
"USA",
false,
860000L,
Arrays.asList("west_coast", "norcal"))));
futures.add(
cities
.document("LA")
.set(
new City(
"Los Angeles",
"CA",
"USA",
false,
3900000L,
Arrays.asList("west_coast", "socal"))));
futures.add(
cities
.document("DC")
.set(
new City(
"Washington D.C.", null, "USA", true, 680000L, Arrays.asList("east_coast"))));
futures.add(
cities
.document("TOK")
.set(
new City(
"Tokyo", null, "Japan", true, 9000000L, Arrays.asList("kanto", "honshu"))));
futures.add(
cities
.document("BJ")
.set(
new City(
"Beijing",
null,
"China",
true,
21500000L,
Arrays.asList("jingjinji", "hebei"))));
// (optional) block on documents successfully added
ApiFutures.allAsList(futures).get();QueryDataSnippets.java
Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. CollectionReference cities = db.collection("cities");
List<ApiFuture<WriteResult>> futures = new ArrayList<>();
futures.add(
cities
.document("SF")
.set(
new City(
"San Francisco",
"CA",
"USA",
false,
860000L,
Arrays.asList("west_coast", "norcal"))));
futures.add(
cities
.document("LA")
.set(
new City(
"Los Angeles",
"CA",
"USA",
false,
3900000L,
Arrays.asList("west_coast", "socal"))));
futures.add(
cities
.document("DC")
.set(
new City(
"Washington D.C.", null, "USA", true, 680000L, Arrays.asList("east_coast"))));
futures.add(
cities
.document("TOK")
.set(
new City(
"Tokyo", null, "Japan", true, 9000000L, Arrays.asList("kanto", "honshu"))));
futures.add(
cities
.document("BJ")
.set(
new City(
"Beijing",
null,
"China",
true,
21500000L,
Arrays.asList("jingjinji", "hebei"))));
// (optional) block on documents successfully added
ApiFutures.allAsList(futures).get();QueryDataSnippets.java
Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
CollectionReference cities = db.collection("cities");
List<ApiFuture<WriteResult>> futures = new ArrayList<>();
futures.add(
cities
.document("SF")
.set(
new City(
"San Francisco",
"CA",
"USA",
false,
860000L,
Arrays.asList("west_coast", "norcal"))));
futures.add(
cities
.document("LA")
.set(
new City(
"Los Angeles",
"CA",
"USA",
false,
3900000L,
Arrays.asList("west_coast", "socal"))));
futures.add(
cities
.document("DC")
.set(
new City(
"Washington D.C.", null, "USA", true, 680000L, Arrays.asList("east_coast"))));
futures.add(
cities
.document("TOK")
.set(
new City(
"Tokyo", null, "Japan", true, 9000000L, Arrays.asList("kanto", "honshu"))));
futures.add(
cities
.document("BJ")
.set(
new City(
"Beijing",
null,
"China",
true,
21500000L,
Arrays.asList("jingjinji", "hebei"))));
// (optional) block on documents successfully added
ApiFutures.allAsList(futures).get();QueryDataSnippets.java
Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
CollectionReference cities = db.collection("cities");
List<ApiFuture<WriteResult>> futures = new ArrayList<>();
futures.add(
cities
.document("SF")
.set(
new City(
"San Francisco",
"CA",
"USA",
false,
860000L,
Arrays.asList("west_coast", "norcal"))));
futures.add(
cities
.document("LA")
.set(
new City(
"Los Angeles",
"CA",
"USA",
false,
3900000L,
Arrays.asList("west_coast", "socal"))));
futures.add(
cities
.document("DC")
.set(
new City(
"Washington D.C.", null, "USA", true, 680000L, Arrays.asList("east_coast"))));
futures.add(
cities
.document("TOK")
.set(
new City(
"Tokyo", null, "Japan", true, 9000000L, Arrays.asList("kanto", "honshu"))));
futures.add(
cities
.document("BJ")
.set(
new City(
"Beijing",
null,
"China",
true,
21500000L,
Arrays.asList("jingjinji", "hebei"))));
// (optional) block on documents successfully added
ApiFutures.allAsList(futures).get();QueryDataSnippets.java
Java CollectionReference cities = db.collection("cities");
List<ApiFuture<WriteResult>> futures = new ArrayList<>();
futures.add(
cities
.document("SF")
.set(
new City(
"San Francisco",
"CA",
"USA",
false,
860000L,
Arrays.asList("west_coast", "norcal"))));
futures.add(
cities
.document("LA")
.set(
new City(
"Los Angeles",
"CA",
"USA",
false,
3900000L,
Arrays.asList("west_coast", "socal"))));
futures.add(
cities
.document("DC")
.set(
new City(
"Washington D.C.", null, "USA", true, 680000L, Arrays.asList("east_coast"))));
futures.add(
cities
.document("TOK")
.set(
new City(
"Tokyo", null, "Japan", true, 9000000L, Arrays.asList("kanto", "honshu"))));
futures.add(
cities
.document("BJ")
.set(
new City(
"Beijing",
null,
"China",
true,
21500000L,
Arrays.asList("jingjinji", "hebei"))));
// (optional) block on documents successfully added
ApiFutures.allAsList(futures).get();QueryDataSnippets.java
Kotlin+KTX CollectionReference cities = db.collection("cities");
List<ApiFuture<WriteResult>> futures = new ArrayList<>();
futures.add(
cities
.document("SF")
.set(
new City(
"San Francisco",
"CA",
"USA",
false,
860000L,
Arrays.asList("west_coast", "norcal"))));
futures.add(
cities
.document("LA")
.set(
new City(
"Los Angeles",
"CA",
"USA",
false,
3900000L,
Arrays.asList("west_coast", "socal"))));
futures.add(
cities
.document("DC")
.set(
new City(
"Washington D.C.", null, "USA", true, 680000L, Arrays.asList("east_coast"))));
futures.add(
cities
.document("TOK")
.set(
new City(
"Tokyo", null, "Japan", true, 9000000L, Arrays.asList("kanto", "honshu"))));
futures.add(
cities
.document("BJ")
.set(
new City(
"Beijing",
null,
"China",
true,
21500000L,
Arrays.asList("jingjinji", "hebei"))));
// (optional) block on documents successfully added
ApiFutures.allAsList(futures).get();QueryDataSnippets.java
phi tiêu CollectionReference cities = db.collection("cities");
List<ApiFuture<WriteResult>> futures = new ArrayList<>();
futures.add(
cities
.document("SF")
.set(
new City(
"San Francisco",
"CA",
"USA",
false,
860000L,
Arrays.asList("west_coast", "norcal"))));
futures.add(
cities
.document("LA")
.set(
new City(
"Los Angeles",
"CA",
"USA",
false,
3900000L,
Arrays.asList("west_coast", "socal"))));
futures.add(
cities
.document("DC")
.set(
new City(
"Washington D.C.", null, "USA", true, 680000L, Arrays.asList("east_coast"))));
futures.add(
cities
.document("TOK")
.set(
new City(
"Tokyo", null, "Japan", true, 9000000L, Arrays.asList("kanto", "honshu"))));
futures.add(
cities
.document("BJ")
.set(
new City(
"Beijing",
null,
"China",
true,
21500000L,
Arrays.asList("jingjinji", "hebei"))));
// (optional) block on documents successfully added
ApiFutures.allAsList(futures).get();QueryDataSnippets.java
Java
CollectionReference cities = db.collection("cities");
List<ApiFuture<WriteResult>> futures = new ArrayList<>();
futures.add(
cities
.document("SF")
.set(
new City(
"San Francisco",
"CA",
"USA",
false,
860000L,
Arrays.asList("west_coast", "norcal"))));
futures.add(
cities
.document("LA")
.set(
new City(
"Los Angeles",
"CA",
"USA",
false,
3900000L,
Arrays.asList("west_coast", "socal"))));
futures.add(
cities
.document("DC")
.set(
new City(
"Washington D.C.", null, "USA", true, 680000L, Arrays.asList("east_coast"))));
futures.add(
cities
.document("TOK")
.set(
new City(
"Tokyo", null, "Japan", true, 9000000L, Arrays.asList("kanto", "honshu"))));
futures.add(
cities
.document("BJ")
.set(
new City(
"Beijing",
null,
"China",
true,
21500000L,
Arrays.asList("jingjinji", "hebei"))));
// (optional) block on documents successfully added
ApiFutures.allAsList(futures).get();QueryDataSnippets.java
con trăn
CollectionReference cities = db.collection("cities");
List<ApiFuture<WriteResult>> futures = new ArrayList<>();
futures.add(
cities
.document("SF")
.set(
new City(
"San Francisco",
"CA",
"USA",
false,
860000L,
Arrays.asList("west_coast", "norcal"))));
futures.add(
cities
.document("LA")
.set(
new City(
"Los Angeles",
"CA",
"USA",
false,
3900000L,
Arrays.asList("west_coast", "socal"))));
futures.add(
cities
.document("DC")
.set(
new City(
"Washington D.C.", null, "USA", true, 680000L, Arrays.asList("east_coast"))));
futures.add(
cities
.document("TOK")
.set(
new City(
"Tokyo", null, "Japan", true, 9000000L, Arrays.asList("kanto", "honshu"))));
futures.add(
cities
.document("BJ")
.set(
new City(
"Beijing",
null,
"China",
true,
21500000L,
Arrays.asList("jingjinji", "hebei"))));
// (optional) block on documents successfully added
ApiFutures.allAsList(futures).get();QueryDataSnippets.java
con trăn
CollectionReference cities = db.collection("cities");
List<ApiFuture<WriteResult>> futures = new ArrayList<>();
futures.add(
cities
.document("SF")
.set(
new City(
"San Francisco",
"CA",
"USA",
false,
860000L,
Arrays.asList("west_coast", "norcal"))));
futures.add(
cities
.document("LA")
.set(
new City(
"Los Angeles",
"CA",
"USA",
false,
3900000L,
Arrays.asList("west_coast", "socal"))));
futures.add(
cities
.document("DC")
.set(
new City(
"Washington D.C.", null, "USA", true, 680000L, Arrays.asList("east_coast"))));
futures.add(
cities
.document("TOK")
.set(
new City(
"Tokyo", null, "Japan", true, 9000000L, Arrays.asList("kanto", "honshu"))));
futures.add(
cities
.document("BJ")
.set(
new City(
"Beijing",
null,
"China",
true,
21500000L,
Arrays.asList("jingjinji", "hebei"))));
// (optional) block on documents successfully added
ApiFutures.allAsList(futures).get();QueryDataSnippets.java
C++ let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
00Nút. js
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
01Đi
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
02PHP
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
03Đoàn kết let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
04C#
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
05hồng ngọc
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
06
Không bằng (let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift82) Sử dụng toán tử không bằng (
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
82) để trả về các tài liệu có trường đã cho tồn tại và không khớp với giá trị so sánh. Ví dụPhiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
07Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
08Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
09Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
10Java let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
11Kotlin+KTX let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
12phi tiêu let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
13Java
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
14
con trăn let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
15C++ let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
15Nút. js
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
17Đi let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
15PHP
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
19Đoàn kết let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
15C# let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
15hồng ngọc
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
02Truy vấn này trả về mọi tài liệu
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
89 trong đó trường let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
90 tồn tại với giá trị khác với let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
91 hoặc let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
92. Điều này bao gồm các tài liệu let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
89 trong đó giá trị trường let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
90 bằng let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
95 hoặc bất kỳ giá trị không phải boolean nào ngoài let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
92Truy vấn này không trả về tài liệu
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
89 khi trường let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
90 không tồn tại. Các truy vấn không bằng nhau (let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
82) và let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
86 loại trừ các tài liệu không tồn tại trường đã choMột trường tồn tại khi nó được đặt thành bất kỳ giá trị nào, bao gồm một chuỗi trống (
FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
01), let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
92 và FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
03 (không phải là số). Lưu ý rằng giá trị trường let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
92 không khớp với mệnh đề let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
82, bởi vì FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
06 ước tính thành FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
07Cảnh báo. Mệnh đề truy vấn let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
82 có thể khớp với nhiều tài liệu trong bộ sưu tập. Để kiểm soát số lượng kết quả trả về, hãy sử dụng mệnh đề giới hạn hoặc. Hạn chế Lưu ý các giới hạn sau đối với truy vấn
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
82Chỉ những tài liệu có trường đã cho mới có thể khớp với truy vấn Bạn không thể kết hợp let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
86 và let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
82 trong một truy vấn phức hợp Trong một truy vấn phức hợp, các so sánh phạm vi (let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
77, ________ 078, ________ 080, ________ 081) và không bằng (________ 082, let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
86) đều phải lọc trên cùng một trường
Thành viên mảng Bạn có thể sử dụng toán tử
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
83 để lọc dựa trên giá trị mảng. Ví dụPhiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
03Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
04Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
05Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
06Java var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
07Kotlin+KTX var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
08phi tiêu var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
09Java
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
10
con trăn
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
11con trăn
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
12C++ var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
13Nút. js
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
14Đi
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
15PHP
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
16Đoàn kết var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
17C#
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
18hồng ngọc
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
19Truy vấn này trả về mọi tài liệu
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
89 trong đó trường FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
20 là một mảng chứa FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
21. Nếu mảng có nhiều phiên bản của giá trị mà bạn truy vấn, thì tài liệu chỉ được đưa vào kết quả một lầnBạn có thể sử dụng tối đa một mệnh đề
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
83 cho mỗi truy vấn. Bạn không thể kết hợp let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
83 với let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
84
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift85, let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift86 và let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift84 Sử dụng toán tử
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
85 để kết hợp tối đa 10 mệnh đề đẳng thức (let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
79) trên cùng một trường với một FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
30 logic. Truy vấn let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
85 trả về các tài liệu trong đó trường đã cho khớp với bất kỳ giá trị so sánh nào. Ví dụPhiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
20Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
21Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
22Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
23Java var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
24Kotlin+KTX var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
25phi tiêu var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
26Java
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
27
con trăn
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
28con trăn
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
29C++ var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
30Nút. js
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
31Đi
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
32PHP
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
33Đoàn kết var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
34C#
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
35hồng ngọc
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
36Truy vấn này trả về mọi tài liệu
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
89 trong đó trường FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
33 được đặt thành FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
34 hoặc FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
35. Từ dữ liệu ví dụ, điều này bao gồm các tài liệu FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
36, FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
37, FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
38 và FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
39let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
86Sử dụng toán tử
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
86 để kết hợp tối đa 10 mệnh đề không bằng nhau (let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
82) trên cùng một trường với một FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
43 logic. Truy vấn let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
86 trả về các tài liệu có trường đã cho tồn tại, không phải là let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
92 và không khớp với bất kỳ giá trị so sánh nào. Ví dụPhiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
37Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
38Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
39Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
40Java var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
41Kotlin+KTX var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
42phi tiêu var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
43Java
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
44
con trăn let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
15C++ var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
46Nút. js
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
47Đi let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
15PHP
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
49Đoàn kết let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
15C# let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
15hồng ngọc
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
52Truy vấn này trả về mọi tài liệu
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
89 trong đó trường FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
33 tồn tại và không được đặt thành FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
34, FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
35 hoặc let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
92. Từ dữ liệu ví dụ, điều này bao gồm các tài liệu FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
51 và FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
52Truy vấn
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
86 loại trừ các tài liệu mà trường đã cho không tồn tại. Một trường tồn tại khi nó được đặt thành bất kỳ giá trị nào, bao gồm một chuỗi trống (FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
01), let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
92 và FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
03 (không phải là số). Lưu ý rằng ________ 506 ước tính thành ________ 507. Truy vấn let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
86 với let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
92 là một trong các giá trị so sánh không khớp với bất kỳ tài liệu nàoCảnh báo. Mệnh đề truy vấn let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
86 có thể khớp với nhiều tài liệu trong bộ sưu tập. Để kiểm soát số lượng kết quả trả về, hãy sử dụng mệnh đề giới hạn hoặc. let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
84Sử dụng toán tử ________ 084 để kết hợp tối đa 10 mệnh đề _______ 083 trên cùng một trường với một
FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
30 logic. Truy vấn let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
84 trả về các tài liệu trong đó trường đã cho là một mảng chứa một hoặc nhiều giá trị so sánhPhiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
53Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
54Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
55Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
56Java var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
57Kotlin+KTX var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
58phi tiêu var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
59Java
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
60
con trăn
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
61con trăn
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
62C++ var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
63Nút. js
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
64Đi
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
65PHP
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
66Đoàn kết var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
67C#
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
68hồng ngọc
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
69Truy vấn này trả về mọi tài liệu thành phố trong đó trường
FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
20 là một mảng chứa FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
21 hoặc FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
69. Từ dữ liệu ví dụ, điều này bao gồm các tài liệu FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
36, FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
37 và FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
38Kết quả từ
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
84 được loại bỏ. Ngay cả khi trường mảng của tài liệu khớp với nhiều giá trị so sánh, tập kết quả chỉ bao gồm tài liệu đó một lần
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
84 luôn lọc theo kiểu dữ liệu mảng. Ví dụ: truy vấn ở trên sẽ không trả về tài liệu thành phố trong đó thay vì một mảng, trường FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
20 là chuỗi FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
21Bạn có thể sử dụng một giá trị mảng làm giá trị so sánh cho
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
85, nhưng không giống như let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
84, mệnh đề so khớp chính xác về độ dài, thứ tự và giá trị của mảng. Ví dụPhiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
70Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
71Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
72Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
73Java var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
74Kotlin+KTX var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
75phi tiêu var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
76Java
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
77
con trăn
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
78con trăn
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
79C++ var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
80Nút. js
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
81Đi
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
82PHP
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
83Đoàn kết var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
84C#
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
85hồng ngọc
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
86Truy vấn này trả về mọi tài liệu thành phố trong đó trường
FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
20 là một mảng chứa chính xác một phần tử của FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
21 hoặc FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
69. Từ dữ liệu ví dụ, chỉ tài liệu ________ 538 đủ điều kiện với trường ________ 520 của nó là ________ 584. Tuy nhiên, tài liệu FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
36 không khớp vì trường FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
20 của nó là FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
87Hạn chế Lưu ý các giới hạn sau đối với
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
85, let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
86 và let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
84let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
85, let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
86 và let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
84 hỗ trợ tối đa 10 giá trị so sánhBạn có thể sử dụng tối đa một mệnh đề let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
83 cho mỗi truy vấn. Bạn không thể kết hợp let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
83 với let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
84 Bạn có thể sử dụng tối đa một mệnh đề let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
85, let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
86 hoặc let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
84 cho mỗi truy vấn. Bạn không thể kết hợp các toán tử này trong cùng một truy vấn Bạn không thể kết hợp let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
86 với không bằng let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
82 Bạn không thể sắp xếp truy vấn của mình theo trường có trong mệnh đề bằng (let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
79) hoặc let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
85 truy vấn phức hợp Bạn có thể xâu chuỗi nhiều phương thức toán tử đẳng thức (
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
79 hoặc let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
83) để tạo các truy vấn cụ thể hơn (logic FIRCollectionReference *citiesRef = [self.db collectionWithPath:@"cities"];
[[citiesRef documentWithPath:@"SF"] setData:@{
@"name": @"San Francisco",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @860000,
@"regions": @[@"west_coast", @"norcal"]
}];
[[citiesRef documentWithPath:@"LA"] setData:@{
@"name": @"Los Angeles",
@"state": @"CA",
@"country": @"USA",
@"capital": @(NO),
@"population": @3900000,
@"regions": @[@"west_coast", @"socal"]
}];
[[citiesRef documentWithPath:@"DC"] setData:@{
@"name": @"Washington D.C.",
@"country": @"USA",
@"capital": @(YES),
@"population": @680000,
@"regions": @[@"east_coast"]
}];
[[citiesRef documentWithPath:@"TOK"] setData:@{
@"name": @"Tokyo",
@"country": @"Japan",
@"capital": @(YES),
@"population": @9000000,
@"regions": @[@"kanto", @"honshu"]
}];
[[citiesRef documentWithPath:@"BJ"] setData:@{
@"name": @"Beijing",
@"country": @"China",
@"capital": @(YES),
@"population": @21500000,
@"regions": @[@"jingjinji", @"hebei"]
}];ViewController.m
43). Tuy nhiên, bạn phải tạo một chỉ mục tổng hợp để kết hợp các toán tử đẳng thức với các toán tử bất đẳng thức, let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
77, let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
78, let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
80 và let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
82Phiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
87Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
88Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
89Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
90Java var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
91Kotlin+KTX var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
92phi tiêu var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
93Java
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
94
con trăn
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
95con trăn
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
96C++ var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
97Nút. js
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
98Đi
var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
99PHP
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
00Đoàn kết let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
01C#
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
02hồng ngọc
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
03Bạn có thể thực hiện so sánh phạm vi (
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
77, let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
78, let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
80, let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
81) hoặc không bằng (let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
82) chỉ trên một trường duy nhất và bạn có thể bao gồm tối đa một mệnh đề let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
83 hoặc let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
84 trong truy vấn ghépHợp lệ . Chỉ lọc phạm vi trên một trường
Phiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
04Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
05Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
06Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
07Java let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
08Kotlin+KTX let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
09phi tiêu let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
10Java
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
11con trăn
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
12con trăn
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
13C++ let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
14Nút. js
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
15Đi
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
16PHP
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
17Đoàn kết let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
18C#
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
19hồng ngọc
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
20Không hợp lệ . Bộ lọc phạm vi trên các trường khác nhau
Phiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
21Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
22Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
23Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
24Java let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
25Kotlin+KTX let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
26phi tiêu let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
27Java
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
28
con trăn
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
29con trăn
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
30C++ let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
31Nút. js
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
32Đi
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
33PHP
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
34Đoàn kết let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
35C#
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
36hồng ngọc
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
37Truy vấn nhóm bộ sưu tập Một nhóm bộ sưu tập bao gồm tất cả các bộ sưu tập có cùng ID. Theo mặc định, các truy vấn truy xuất kết quả từ một bộ sưu tập duy nhất trong cơ sở dữ liệu của bạn. Sử dụng truy vấn nhóm bộ sưu tập để truy xuất tài liệu từ một nhóm bộ sưu tập thay vì từ một bộ sưu tập duy nhất
Ví dụ: bạn có thể tạo nhóm bộ sưu tập
CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
18 bằng cách thêm bộ sưu tập con địa danh vào mỗi thành phốPhiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
38Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
39Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
40Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
41Java let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
42Kotlin+KTX let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
43phi tiêu let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
44Java
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
45
con trăn
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
46con trăn
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
47C++ let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
48Nút. js
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
49Đi
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
50PHP
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
51Đoàn kết var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
84C#
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
53hồng ngọc
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
54Chúng tôi có thể sử dụng truy vấn phức hợp và đơn giản được mô tả trước đó để truy vấn tập hợp con
CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
18 của một thành phố, nhưng bạn cũng có thể muốn truy xuất kết quả từ tập hợp con CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
18 của mọi thành phố cùng một lúcNhóm bộ sưu tập
CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
18 bao gồm tất cả các bộ sưu tập có ID CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
18 và bạn có thể truy vấn nó bằng truy vấn nhóm bộ sưu tập. Ví dụ: truy vấn nhóm bộ sưu tập này truy xuất tất cả CollectionReference cities = db.collection("cities");
Map<String, Object> data1 = new HashMap<>();
data1.put("name", "San Francisco");
data1.put("state", "CA");
data1.put("country", "USA");
data1.put("capital", false);
data1.put("population", 860000);
data1.put("regions", Arrays.asList("west_coast", "norcal"));
cities.document("SF").set(data1);
Map<String, Object> data2 = new HashMap<>();
data2.put("name", "Los Angeles");
data2.put("state", "CA");
data2.put("country", "USA");
data2.put("capital", false);
data2.put("population", 3900000);
data2.put("regions", Arrays.asList("west_coast", "socal"));
cities.document("LA").set(data2);
Map<String, Object> data3 = new HashMap<>();
data3.put("name", "Washington D.C.");
data3.put("state", null);
data3.put("country", "USA");
data3.put("capital", true);
data3.put("population", 680000);
data3.put("regions", Arrays.asList("east_coast"));
cities.document("DC").set(data3);
Map<String, Object> data4 = new HashMap<>();
data4.put("name", "Tokyo");
data4.put("state", null);
data4.put("country", "Japan");
data4.put("capital", true);
data4.put("population", 9000000);
data4.put("regions", Arrays.asList("kanto", "honshu"));
cities.document("TOK").set(data4);
Map<String, Object> data5 = new HashMap<>();
data5.put("name", "Beijing");
data5.put("state", null);
data5.put("country", "China");
data5.put("capital", true);
data5.put("population", 21500000);
data5.put("regions", Arrays.asList("jingjinji", "hebei"));
cities.document("BJ").set(data5);DocSnippets.java
23 mốc trên tất cả các thành phốPhiên bản web 9 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
55Phiên bản web 8 giới thiệu về SDK mô-đun Web v9 có thể rung cây và nâng cấp từ phiên bản 8. let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
56Nhanh Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
57Mục tiêu-C Ghi chú. Sản phẩm này không khả dụng trên các mục tiêu watchOS và App Clip
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
58Java let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
59Kotlin+KTX let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
60phi tiêu let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
61Java
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
62
con trăn
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
63con trăn
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
64C++ let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
48Nút. js
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
66Đi
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
67PHP
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
68Đoàn kết var citiesRef = db.collection("cities");
citiesRef.doc("SF").set({
name: "San Francisco", state: "CA", country: "USA",
capital: false, population: 860000,
regions: ["west_coast", "norcal"] });
citiesRef.doc("LA").set({
name: "Los Angeles", state: "CA", country: "USA",
capital: false, population: 3900000,
regions: ["west_coast", "socal"] });
citiesRef.doc("DC").set({
name: "Washington, D.C.", state: null, country: "USA",
capital: true, population: 680000,
regions: ["east_coast"] });
citiesRef.doc("TOK").set({
name: "Tokyo", state: null, country: "Japan",
capital: true, population: 9000000,
regions: ["kanto", "honshu"] });
citiesRef.doc("BJ").set({
name: "Beijing", state: null, country: "China",
capital: true, population: 21500000,
regions: ["jingjinji", "hebei"] });test.firestore.js
84C#
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
70hồng ngọc
let citiesRef = db.collection("cities")
citiesRef.document("SF").setData([
"name": "San Francisco",
"state": "CA",
"country": "USA",
"capital": false,
"population": 860000,
"regions": ["west_coast", "norcal"]
])
citiesRef.document("LA").setData([
"name": "Los Angeles",
"state": "CA",
"country": "USA",
"capital": false,
"population": 3900000,
"regions": ["west_coast", "socal"]
])
citiesRef.document("DC").setData([
"name": "Washington D.C.",
"country": "USA",
"capital": true,
"population": 680000,
"regions": ["east_coast"]
])
citiesRef.document("TOK").setData([
"name": "Tokyo",
"country": "Japan",
"capital": true,
"population": 9000000,
"regions": ["kanto", "honshu"]
])
citiesRef.document("BJ").setData([
"name": "Beijing",
"country": "China",
"capital": true,
"population": 21500000,
"regions": ["jingjinji", "hebei"]
])ViewController.swift
71Trước khi sử dụng truy vấn nhóm bộ sưu tập, bạn phải tạo một chỉ mục hỗ trợ truy vấn nhóm bộ sưu tập của mình. Bạn có thể tạo chỉ mục thông qua thông báo lỗi, bảng điều khiển hoặc Firebase CLI
