Angular Firebase "Error: Reference.update failed: First argument contains undefined in property 'users.UID.email' "

Question

I'm new firebase database, I try to update UID to Realtime Database when signup, but got an error like this

Error: Reference.update failed: First argument contains undefined in property 'users.UID.email'

auth.service.ts

import ...
...
export class AuthService { 
...

 async emailSignUp(email: string, password: string) {
    try {
      const user = await this.afAuth.auth.createUserWithEmailAndPassword(email, password);
      console.log('user ', user);
      this.authState = user;
      console.log('authState ', this.authState);
      this.updateUserData();
      this.router.navigate(['/']);
    } catch (error) {
      return console.log(error);
    }
  }

 get currentUserId(): string {
    console.log('currentId ', this.authenticated, ' ', this.authState.user.uid);
    return this.authenticated ? this.authState.user.uid : '';
  }

 private updateUserData(): void {
    const path = `users/${this.currentUserId}`; // Endpoint on firebase
    const userRef: AngularFireObject<any> = this.db.object(path);
    const data = {
      email: this.authState.email,
      name: this.authState.displayName
    };
    userRef.update(data)
      .catch(error => console.log(error));
  }

}

Console

Can somebody help me, please? please let me know if more snippets are needed. Thanks in advance.

Doug Stevenson · Accepted Answer · 2020-10-30 03:03:48Z

1

The error is telling you that this.authState.email is undefined. It's not valid to pass an undefined value to Realtime Database. You should check that before using it this way.

I'm seeing that you assigned this.authState from user in your constructor. Your logged user in the console, and it doesn't have a property called email, so this error does not surprise me at all. But it does have a property also called user. So, perhaps you meant this.authState.user.email instead.

answered Oct 30, 2020 at 3:03

Doug Stevenson

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