AngularFire2 - 如何在页面刷新后保持登录状态
问题描述:
我正在使用AngularFire2作为应用程序,并且我已经获得了使用Firebase的注册/登录功能,但是,每次刷新页面时,登录状态为重置并不会持续。我不能完全找到这样做的功能,但我觉得我错过了一些非常小的东西。AngularFire2 - 如何在页面刷新后保持登录状态
我可以使用AngularFireAuth
检查页面加载的地方吗?
这里是我的身份验证提供者的代码:
import { Injectable } from '@angular/core';
import {Observable, Subject, BehaviorSubject} from "rxjs/Rx";
import {AngularFireAuth, FirebaseAuthState} from "angularfire2";
import {AuthInfo} from "./auth-info";
import {Router} from "@angular/router";
@Injectable()
export class AuthService {
static UNKNOWN_USER = new AuthInfo(null);
authInfo$: BehaviorSubject<AuthInfo> = new BehaviorSubject<AuthInfo>(AuthService.UNKNOWN_USER);
constructor(private auth: AngularFireAuth, private router:Router) {
}
login(email, password):Observable<FirebaseAuthState> {
return this.fromFirebaseAuthPromise(this.auth.login({email, password}));
}
signUp(email, password) {
return this.fromFirebaseAuthPromise(this.auth.createUser({email, password}));
}
fromFirebaseAuthPromise(promise):Observable<any> {
const subject = new Subject<any>();
promise
.then(res => {
const authInfo = new AuthInfo(this.auth.getAuth().uid);
this.authInfo$.next(authInfo);
subject.next(res);
subject.complete();
},
err => {
this.authInfo$.error(err);
subject.error(err);
subject.complete();
});
return subject.asObservable();
}
logout() {
this.auth.logout();
this.authInfo$.next(AuthService.UNKNOWN_USER);
this.router.navigate(['/login']);
}
}
三江源提前!
答
AngularFireAuth
是一个可观测值并发出FirebaseAuthState
值。如果用户已登录且页面已刷新,则AngularFireAuth
将发出已验证的FirebaseAuthState
;否则,它会发出null
。
所以这样的事情应该接近解决您的问题:
constructor(private auth: AngularFireAuth, private router:Router) {
auth.subscribe((authState) => {
if (authState) {
const authInfo = new AuthInfo(authState.uid);
this.authInfo$.next(authInfo);
}
});
}
cartant,这可能是你帮助过我的第5次。有一天我会找到你......我会抱抱你。谢谢你这么做了。你是最棒的! –