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.

I am using AngularFire2 (Ionic2) and Firebase Authentication.

我在尝试获取当前用户时遇到问题.适用于我，但不一致.有时填充，有时为null.

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;

有没有办法使当前用户更加一致?

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

更多信息:

我登录如下:

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) => {
                        ....
            });
    });

此处始终填充用户.但是我需要访问用户的地方是代码的另一部分.

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

任何帮助表示赞赏.

更新

我尝试使用以下命令获取当前用户:

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(() => {...
    });

但是当我尝试创建凭据时，出现以下错误:

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

例外:未捕获(承诺中):错误:重新验证失败:第一 参数凭据"必须是有效的凭据.

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

使用第一种方法获取当前用户后，我没有任何错误，并且可以正常工作.

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

更多信息:

当我console.log以下user对象时，它们看起来都相同:

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

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

和

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

但其中一个有效(当不为null时)，而另一个无法重新认证.

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

推荐答案

请注意，这里有一个新的AngularFire版本. (4.0.0)

Attention there is a new AngularFire Version. (4.0.0)

在新版本中，所有模块均被拆分.也就是说，您需要使用AngularFireAuth

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');
          }
        });
    }

希望我能帮忙

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