如何将多个验证提供商链接到Firebase帐户？ [英] How to Link Multiple Auth Providers to an Firebase Account?

问题描述

我无法成功执行，我按照Firebase文档的说明按照以下步骤操作：

I am unable to to sucessfully to do , I followed the following steps as instructed on Firebase Docs:

1. 使用现有的登录auth提供者（我的案例：Facebook ）


2. 完成新认证提供商的登录流程，直到，但不包括，调用其中一个 Auth.signInWith 方法（我的情况：我想链接电子邮件和密码和Google OAUth ）。所以这是我不清楚的一步，我使用 var provider = new firebase.auth.GoogleAuthProvider（）; 创建了一个新的提供程序，我没有执行 Firebase.auth（）。signInWithPopup（provider）。


3. 然后为了获得google的authcredential，我运行 var credential = firebase.auth.GoogleAuthProvider.credential（
googleUser.getAuthResponse（）。id_token）; （我得到一个未定义的googleUser错误）这个错误似乎是合适的，因为我没有登录使用Google Outh，但这是第二个步骤说明（不登录）


4. 然后，此命令链接到Facebook提供商 auth.currentUser.link（凭证）上的当前用户

1. Signed in use using existing auth provider(my case:facebook).
2. Complete the sign-in flow for the new authentication provider up to, but not including, calling one of the Auth.signInWith methods.(my case: i want to link email & password and Google OAUth). So this is the step i'm unclear about, I created a new provider using var provider = new firebase.auth.GoogleAuthProvider(); and I did not do Firebase.auth().signInWithPopup(provider) .
3. Then to get authcredential for google I run var credential = firebase.auth.GoogleAuthProvider.credential( googleUser.getAuthResponse().id_token); (I get an undefined googleUser error) this error seems appropriate since I have not signed in using Google Oauth but thats what the 2nd steps states(not to signin)
4. And then this command to link with the current user who is on a Facebook Provider auth.currentUser.link(credential)

我的理解是，currentUser需要链接到我现有的提供商（Facebook）。似乎谷歌的凭据变量从来没有计算过。任何具有功能代码示例的人都会真的有帮助。

My understanding is that currentUser needs to be linked to my existing Provider(Facebook). It seems that credential variable for google is never computed. Anyone with a functional code example would really help.

推荐答案

如果您要手动将google和电子邮件/通行证帐户链接到现有的只有Facebook的firebase用户，以下：
首先用户应该登录到Facebook。
链接google用户：

If you want to manually link a google and email/pass account to an existing facebook only firebase user, you can do the following: First the user should be signed in to facebook. Link the google user:

var provider = new firebase.auth.GoogleAuthProvider();
auth.currentUser.linkWithPopup(provider);

然后链接电子邮件/通行证帐户：

Then link the email/pass account:

auth.currentUser.link(firebase.auth.EmailAuthProvider.credential(auth.currentUser.email, 'password'))

所有要链接的帐户必须是新的，而不是已经链接。

All these accounts to be linked must be new and not already linked.

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