Using Ionic to send email verification via Firebase

I have encountered an issue while attempting to send an email verification to users upon signing up. Even though the user is successfully added to Firebase, the email verification is not being sent out. Upon checking the console for errors, I found the following message:

Cannot read property 'sendEmailVerification' of undefined

import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams } from 'ionic-angular';
import { User } from "../../models/user";
import { AngularFireAuth } from "angularfire2/auth";
import * as firebase from 'firebase';


@IonicPage()
@Component({
  selector: 'page-register',
  templateUrl: 'register.html',
})
export class RegisterPage {

  user = {} as User

  constructor(private afAuth: AngularFireAuth,
    public navCtrl: NavController, public navParams: NavParams) {
  }

  async register(user: User) {
     try {
       const result = await this.afAuth.auth.createUserWithEmailAndPassword(user.email, user.password)
       .then(res => {
         var auth = firebase.auth();
         this.auth.sendEmailVerification(user.email)
         this.navCtrl.setRoot('LoginPage');
       }
     }
     catch (e) {
       console.log(e);
     }
   }

}

Answer №1

The first thing to note is that you cannot reference the variable as it is contained within the function's local scope.

Consider removing the 'this' keyword or alternatively, you can implement email verification in the following manner:

Within your 'then' function after the registration process:

 let user = firebase.auth().currentUser;
 user.sendEmailVerification();
 this.navCtrl.setRoot('LoginPage');

Answer №2

It seems that you are utilizing this.auth.sendEmailVerification without properly assigning the variable this.auth.

You might want to consider modifying this.auth.sendEmailVerification to either auth.sendEmailVerification, as the variable is already accessible from the previous line, or to

this.afAuth.auth.sendEmailVerification
.

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