使用Firebase重新验证

Question

我将非常感谢有关如何在Firebase中重新验证用户的帮助.如果文档没有解释如何使用它,我想知道添加所有这些强大的功能是否有任何意义:

目前,这正是我正在尝试的,而且它无法正常工作.错误如cannot read property 'credential' of undefined

在构造函数中:

  constructor(@Inject(FirebaseApp) firebaseApp: any) {
    this.auth = firebaseApp.auth();
    console.log(this.auth);
  }

那么功能

changePassword(passwordData) {
    if(passwordData.valid) {
      console.log(passwordData.value);
      // let us reauthenticate first irrespective of how long
      // user's been logged in!

      const user = this.auth.currentUser;
      const credential = this.auth.EmailAuthProvider.credential(user.email, passwordData.value.oldpassword);
      console.log(credential);
      this.auth.reauthenticate(credential)
        .then((_) => {
          console.log('User reauthenticated');
          this.auth.updatePassword(passwordData.value.newpassword)
            .then((_) => {
              console.log('Password changed');
            })
            .catch((error) => {
              console.log(error);
            })
        })
        .catch((error) => {
          console.log(error);
        })
    }
  }

Answer 1

该reauthenticate()方法在firebase.User上调用,而不是在firebase.auth.Auth本身上调用.

var user = firebase.app.auth().currentUser;
var credentials = firebase.auth.EmailAuthProvider.credential('puf@firebaseui.com', 'firebase');
user.reauthenticate(credentials);

更新(2017年7月):

4.0版本的Firebase Web SDK有一些重大变化.从发行说明:

爆炸:firebase.User.prototype.reauthenticate已被删除有利于firebase.User.prototype.reauthenticateWithCredential.

据我所知,这reauthenticateWithCredential是旧方法的替代品.