javascript - Firestore where 语句与 array-contains 不起作用

Question

我检查我的数据库以获取引用(存在)，但没有收到任何聊天记录，但我不知道在哪里。

chat.service.ts:

  getUserChats(): Observable<Chat[]> {
        let uid = '-1';
        this.auth.currUser.subscribe(user => (uid = user.uid));
        this.chats = this.afs
          .collection('chats', ref => ref.where('members', 'array-contains', `users/${uid}`))
          .snapshotChanges()
          .pipe(
            map(actions => {
              return actions.map(action => {
                const data = action.payload.doc.data() as Chat;
                const id = action.payload.doc.id;
                return {id, ...data};
              });
            })
          ) as Observable<Chat[]>;
        return this.chats;
      }

该代码的目的是获取登录用户所属的所有聊天。我通过检查成员数组(如果有任何对他的引用)来做到这一点。

chat.component.ts:

chats: Observable<Chat[]>;
  constructor(private router: Router, public chatService: ChatService, public dialog: MatDialog, public auth: AuthService) { }

  ngOnInit() {
    this.chats = this.chatService.getUserChats();
  }

chat.component.html:

<mat-list-option *ngFor="let chat of chats | async" (click)="handleClick(chatList)" [value]="chat.id">
        <img matListAvatar src="./assets/avatar.svg" alt="Avatar Icon">
        <h3 mat-line>{{chat.name}}</h3>
        <p mat-line>test</p>
      </mat-list-option>

聊天结构:

Answer 1

显然，您正在查询users/uid，而数据库中存储的是/users/uid，请参阅第一个/