Question

如何将Observable分配给FirebaseObjectObservable？

目前我收到以下错误

Type '{}' is not assignable to type 'FirebaseObjectObservable<UserProfile[]>'.                                                                                                  
  Property '_ref' is missing in type '{}'.

方法getUserProfile

 getUserProfile() {
    const getUser = new Subject();
    this.getUser().subscribe(
        authResp => {
          console.log('response received from getUser():', authResp);
          const data = this.af.database.object(`users/${authResp}`);
          getUser.next(data);
          getUser.complete();
        },
        err => {
          getUser.error(err);
          getUser.complete();
        }
      )
     return getUser.asObservable();
   }

组件

export class HomeComponent implements OnInit, OnDestroy {
  private sub: Subscription;
  theUserProfile: FirebaseObjectObservable<UserProfile[]>;

  constructor(private authService:AuthService, private af: AngularFire, private auth: FirebaseAuth) {}

   ngOnInit() {
   this.sub = this.authService.getUserProfile().subscribe( data => {
      console.log('this is data:', data);
      this.theUserProfile = data;
   })
  }

  ngOnDestroy() {
    this.sub.unsubscribe();
  }
}

问题是：如何将数据输出分配给this.theUserProfile？ console.log（'这是数据：'，数据）;返回this is data: FirebaseObjectObservable {_isScalar: false, _ref: U}

Answer 1

感谢Fabio的建议，我能够回答我自己的问题。

需要在我的组件中更改以下内容。

export class HomeComponent implements OnInit, OnDestroy {
  private sub: Subscription;
  theUserProfile;

  constructor(private authService:AuthService, private af: AngularFire, private auth: FirebaseAuth) {}

   ngOnInit() {
   this.sub = this.authService.getUserProfile().subscribe( data => {
      console.log('this is data:', data);
      this.theUserProfile = <FirebaseObjectObservable<UserProfile[]>>data;
   })

Angularfire2 - 将一个Observable分配给FirebaseObjectObservable？

1 个答案: