如何在 AngularFire2 中获取 firebase.User [英] How to get the firebase.User in AngularFire2

问题描述

我正在使用 AngularFire2 (Ionic2) 和 Firebase 身份验证.

我在尝试获取当前用户时遇到问题.这对我有用，但不一致.有时填充，有时为空.

让用户:firebase.User = firebase.auth().currentUser;

有没有办法更一致地获取当前用户?

更多信息:

我的登录方式如下:

import { FirebaseAuth, AuthProviders, AuthMethods } from 'angularfire2';公共身份验证:FirebaseAuththis.auth.login({提供者:AuthProviders.Google，方法:AuthMethods.Popup}).then((data: any) => {this.fireAuth.onAuthStateChanged((user) => {....});});

这里总是填充用户.但是我需要访问用户的地方是代码的另一部分.

感谢任何帮助.

更新

我尝试使用以下方法获取当前用户:

 this.auth.subscribe((authData) => {让用户 = authData.auth;凭据 = firebase.auth.GoogleAuthProvider.credential(googleIdToken, googleAccessToken);user.reauthenticate(credential).then(() => {...});

但是当我尝试创建凭据时，出现以下错误:

<块引用>

例外:未捕获(承诺):错误:重新验证失败:首先参数凭据"必须是有效凭据.

当我在第一种方法中获取当前用户时，我没有收到任何错误并且可以正常工作.

更多信息:

当我 console.log 以下 user 对象时，它们看起来完全相同:

 让用户:firebase.User = this.fireAuth.currentUser;控制台日志(用户)；

和

 this.auth.subscribe((authData) => {让用户:firebase.User = authData.auth;控制台日志(用户)；});

但一个有效(当不为空时)而另一个无法重新验证.

解决方案

注意有一个新的 AngularFire 版本.(4.0.0)

在新版本中，所有模块都被拆分了.这意味着，您需要使用 AngularFireAuth

<前>构造函数(afAuth:AngularFireAuth){afAuth.authState.subscribe(auth => {如果(身份验证){console.log('登录');} 别的 {console.log('未登录');}});}

希望能帮到你

I am using AngularFire2 (Ionic2) and Firebase Authentication.

I am having a problem trying to get the current user. The works for me, but inconsistently. Sometimes it is populated, and sometimes it is null.

let user: firebase.User = firebase.auth().currentUser;

Is there a way to get the current user more consistently?

More Info:

I am logging in as follows:

import { FirebaseAuth, AuthProviders, AuthMethods } from 'angularfire2';

public auth: FirebaseAuth

    this.auth.login({
      provider: AuthProviders.Google,
      method: AuthMethods.Popup
    }).then((data: any) => {
            this.fireAuth.onAuthStateChanged((user) => {
                        ....
            });
    });

Here the user is always populated. But where I need to get access to the user, is in another part of the code.

Any help appreciated.

UPDATE

I try use the following to get the current user:

    this.auth.subscribe((authData) => {
      let user = authData.auth;
        credential = firebase.auth.GoogleAuthProvider.credential(googleIdToken, googleAccessToken);
        user.reauthenticate(credential).then(() => {...
    });

But then when I try create the credentials, I get the following error:

EXCEPTION: Uncaught (in promise): Error: reauthenticate failed: First argument "credential" must be a valid credential.

When I get the current user in the first method, I don't get any errors and it works.

More info:

When I console.log the following user objects, they both look identical:

  let user: firebase.User = this.fireAuth.currentUser;
  console.log(user);

and

    this.auth.subscribe((authData) => {
            let user: firebase.User = authData.auth;
            console.log(user);
    });

but the one works (when not null) and the other cannot reauthenticate.

解决方案

Attention there is a new AngularFire Version. (4.0.0)

In the new version all the modules are split up. That means, you need to use the AngularFireAuth

    constructor(afAuth: AngularFireAuth) {
        afAuth.authState.subscribe(auth => {
          if(auth) {
            console.log('logged in');
          } else {
            console.log('not logged in');
          }
        });
    }

Hope I can help

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