public grants = (): Observable<Grants> => {
    return this._http.get(this.actionUrl + '/grants', { withCredentials: true })
      .map((response: Response) => response.json() as Grants)
      .catch(this.handleError);
  }

constructor(protected authService: AuthService) {
    this.authService.grants().subscribe(grants => {
      this.userAccess = grants;
      this.showComponents(grants); // Show the components that user has access to based the grants answer
    });
  }