How to send email verification code to user email in firebase

Question

I want to send email verification code to user's email using firebase authentication. I am using (sendEmailVerification) method but firebase sends a verification link to user's email. Is it possible to send verification code to user's email if yes then how it can be done?

I am using Angular 4 and for firebase angularfire2

Thanks.

Answer 1

If don´t want to use the solution provided by firebase, you have to handle all the process yourself and then update the user emailVerified data to true.

The basic 3 steps are:
1. send an email to the user with "whatever code" you want
2. in your logic, validate the "code" typed by the user
3. use Firebase Admin SDK to update the user (you can only update this user property using the Admin SDK)

Step 3 example, using NodeJS

admin.auth().updateUser(uid, {emailVerified:true})
  .then(function(userRecord) {
      console.log("update success", userRecord.toJSON());
  })
  .catch(function(err) {
      console.log("Error updating user", err);
  });