从Angular组件的BehaviorSubject中获取值

Question

我想尝试通过使用在我的组件中进行比较如果成功显示消息否则在3秒内redirectToPage。但是，如果该*（this.link $ .source.value.success）或（this.link $ .getValue（））*发送NULL，该如何检查。我尝试在控制台浏览器中显示this.link $，它显示的是BehaivorSubject。我尝试使用方法getValue（）无法正常工作。您能帮我吗？

再次感谢

浏览器console.log

Service.ts

  private objectRes: BehaviorSubject<ResModel>;
  public activationOrResetResponse: Observable<ResModel>

  constructor(
    public _apiService: ApiService,
  ) {
    super(_apiService);

    this.objectRes = new BehaviorSubject(null) as BehaviorSubject<ResModel>;
    this.activationOrResetResponse = this.objectRes.asObservable();
  }

  public activateOrResetAccount(token: string, typeRoute: string): void {
    this._apiService.get(this.type + "/" + typeRoute + "/" + token).subscribe(
      (res) => {
        this.activationOrReset = res;
        this.objectRes.next(this.activationOrReset);
      },
      (error) => {
        this.activationOrReset = error;
        this.objectRes.next(this.activationOrReset);
      }
    );
  }

Component.ts

  public link$: Observable<ResModel>;
  constructor(
    private _authUserService: AuthUserService,
    private _activeRoute: ActivatedRoute,
  ) {}

  ngOnInit(): void {
    this.getActivationPage();
  }

  public getActivationPage(): void {
    this.link$ = this._authUserService.activationOrResetResponse;
    this._authUserService.activateOrResetAccount(
      this._activeRoute.snapshot.params.token,
      "confirmation"
    );
    console.log("link$: ", this.link$.getValue());   // null ???????
  }

Answer 1

value吸气剂是value的一部分，而不是相应的可观察物。因此，您需要分配BehaviorSubject()而不是可观察的值才能使用它。尝试以下]]

BehaviorSubject()

Answer 2

您只需要subscribe