angular – 在检查用户之前,AuthGuard不会等待身份验证完成

我在这里阅读了指南： https://angular.io/docs/ts/latest/guide/router.html

看起来非常简单,但是,我不确定如何在auth guard(canActivate)中使用angularfire2的身份验证.我试过的是：

AuthService

import { Injectable } from '@angular/core';
import { AngularFire } from 'angularfire2';

@Injectable()
export class AuthService {

  private user: any;

  constructor(private af: AngularFire) {
    this.af.auth.subscribe(user => {
      this.user = user;
    })
  }

  get authenticated(): boolean {
    return this.user ? true : false;
  }

}

AuthGuard

@Injectable()
export class AuthGuard implements CanActivate {

  constructor(private router: Router,private authService: AuthService) { }

  canActivate(): Observable<boolean> | boolean {
    if (this.authService.authenticated)
      return true;

    this.router.navigate(['/login']);
    return false;
  } 

}

我还为引导程序提供程序添加了AuthService.

这种工作正常,我的主要问题是当我刷新(或最初加载)具有AuthGuard的页面时,它总是将我重定向到登录页面,因为AuthGuard不等待认证响应.有没有办法等待身份验证完成(即使它失败),然后检查用户是否经过身份验证？

@H_301_16@

import { Injectable } from '@angular/core'; import { AngularFire } from 'angularfire2';'; import { Observable } from 'rxjs/Observable'; @Injectable() export class AuthService { private user: any; constructor(private af: AngularFire) { } setUser(user) { this.user = user; } getAuthenticated(): Observable<any> { return this.af.auth; } }

@Injectable() export class AuthGuard implements CanActivate { constructor(private router: Router,private authService: AuthService) { } canActivate(): Observable<boolean> | boolean { // here check if this is first time call. If not return // simple boolean based on user object from authService // otherwise: return this.authService.getAuthenticated.map(user => { this.authService.setUser(user); return user ? true : false; }) } }

angular – 在检查用户之前,AuthGuard不会等待身份验证完成

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