Firebase登录-如何重置uid？

Question

I am using Ionic2 rc4, and Firebase Authentication. If I call signupFirebaseUser() , it logs a uid as expected. However, when I then call loginGoogle() , I would expect it to log a different uid , but it prints the same uid .

This means that a user cannot log in with an email address and password , log out, and then re log in with their Google account (different email address) because it wants to retain their old uid .

signupFirebaseUser(email: string, password: string): firebase.Promise<any> {
    return this.fireAuth.createUserWithEmailAndPassword(email, password).then((newUser: firebase.User) => {
        console.log(newUser.uid);
        this.userProfile.child(newUser.uid).set({ email: email });
        newUser.sendEmailVerification();
    });
}

then

public logout(auth: FirebaseAuth, fireAuth: firebase.auth.Auth): Promise<any> {
        return auth.logout().then(() => {
            fireAuth.signOut().then(() => {
            });
        });
}

then

  loginGoogle() {
    this.auth.login({
      provider: AuthProviders.Google,
      method: AuthMethods.Popup
    }).then((data: FirebaseAuthState) => {
        console.log(data.uid);
    }).catch((error) => {
      console.error('loginGoogle', error);
    });
  }

Question

How do you reset the Firebase Authentication to forget the old uid ? So that when you log in again, you do so from a clean start.

ie Generate a new uid for each provider (Google, Facebook, Email).

Any help appreciated.

Answer 1

You most likely have the option on which ensures you can only have one account per email address (this is actually the default if I remember correctly). To change this option, head to https://console.firebase.google.com/project/_/authentication/providers , select your Firebase project, scroll down to "Advanced" section, and hit the "Change" button next to "One account per email address." There you can set how to handle accounts for the same email address and turn off this behavior.