Firebase additionalUserInfo.isNewUser 总是 return 错误

Firebase additionalUserInfo.isNewUser is always return false

我将 ionic 4 与 firebase/angularfire2 一起使用,并使用 signinwithemeailandpassword() 方法进行身份验证,因此我需要检查用户在注册后首次登录的时间,所以我发现 firebase 使用 [=15= 提供了该选项]

因此,当使用 createUserWithEmailAndPassword() 创建帐户时,isNewUser 是 equaltrue,这是正常的!但是当使用 signinwithemeailandpassword() 登录时总是 returns false 不管是不是第一次登录!

这是登录方法的代码:

 async login(form: NgForm) {

// checking if login is valid
if (form.invalid)
  return this.statusMessage.message('Validation error!');

console.log(this.user);

try {

  const results = await this._afAuth.auth.signInWithEmailAndPassword(this.user.email, this.user.password).then(
    user => console.log(user.additionalUserInfo.isNewUser)

  );
  // console.log(results);

} catch (error) {
  switch (error.code) {
    case "auth/user-not-found":
      this.statusMessage.message("Your email address is wrong! please try again");
      break;

    case "auth/invalid-email":
      this.statusMessage.message("You have enterd invalid email address");
      break;

    case "auth/wrong-password":
      this.statusMessage.message('Password you have enterd is wrong');
      break;

    default:
      console.dir(error);
      this.statusMessage.message('Something wen wrong! please try again later');
      break;
  }

}

注册码:

async register(form: NgForm) {

    // checking for form validation
    if (form.invalid) return this.statusMessage.message('Validation error!');

    console.log(this.user);

    try {
      await this.afAuth.auth.createUserWithEmailAndPassword(this.user.email, this.user.password).then(
        user => console.log(user)

      );
    } catch (error) {
      this.statusMessage.message('Somthing went wrong!, please try again later.');
    }

  }

}

它是错误的,因为它只在他们第一次登录时为真。当您调用 createUserWithEmailAndPassword() 时,客户端以该用户身份登录。以后的登录将不再考虑新用户。

来自documentation

On successful creation of the user account, this user will also be signed in to your application.

只有当您在 Firebase 控制台或使用 Firebase Admin SDK 创建帐户时,isNewUser 对于正常登录才成立。