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？
问题出在你的代码上.在AuthGuard中,您检查authenticated()方法的结果,该方法很可能返回false,因为仍未设置用户属性.尝试这个：
AuthService：
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; }
}
AuthGuard：
@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;
})
}
}
