Angularfire2 - 为FirebaseObjectObservable分配一个Observable？

Question

如何将一个Observable分配给FirebaseObjectObservable？

此刻，我碰到下面的错误回到

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(); 
    } 
} 

的问题是：我怎么能assig n数据输出到this.UserProfile？ console.log（'this is data：'，data）;给回this is data: FirebaseObjectObservable {_isScalar: false, _ref: U}

Answer 1

感谢法比奥的建议，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; 
    })