How to add username with email and password in Firebase?

Question

I'm using Firebase and I'm trying to add a username to the database with the email and password.

Is there a way to do it or is createUserWithEmailAndPassword() function only for email and password?

signUp.addEventListener("click", function(user)
{
    var username = usernameTxt.value;
    var email = emailTxt.value;
    var password = passwordTxt.value;

    firebase.auth().createUserWithEmailAndPassword(email, password).catch(function(error)
    {


      // Handle Errors here.
      var errorCode = error.code;
      var errorMessage = error.message;

      if (errorCode == 'auth/email-already-in-use')
      {
            alert('email-already-in-use.');
        }
        else
        {
            alert(errorMessage);
        }
          console.log(error);

    });
});

The solution that i found to how to add username with the createUserWithEmailAndPassword() function:

firebase.auth().onAuthStateChanged(function(user) {

  var username = usernameTxt.value;

  if (user) {
    firebaseDataBase.ref('users/' + user.uid).set({
        email: user.email,
        uid : user.uid,
        username: username
    });


    console.log("User is signed in.");
  } else {
     console.log("No user is signed in.");

  }
});

Answer 1

You need to create that database users child node yourself ;-)

The createUserWithEmailAndPassword function only creates a new user in Firebase authentication service. The database itself isn't changed at all as a result.

To add this new user to the database as well, try:

firebase.database().ref("users").child(user.uid).set(...)

Answer 2

This cannot be done through createUserWithEmailAndPassword() but there is a firebase method for this . You will need to listen for when authentication state is changed , get the user , then update the profile info . See Below

This code would come after createUserWithEmailAndPassword()

 firebase.auth().onAuthStateChanged(function(user) {

                if (user) {

                   // Updates the user attributes:

                  user.updateProfile({ // <-- Update Method here

                    displayName: "NEW USER NAME",
                    photoURL: "https://example.com/jane-q-user/profile.jpg"

                  }).then(function() {

                    // Profile updated successfully!
                    //  "NEW USER NAME"

                    var displayName = user.displayName;
                    // "https://example.com/jane-q-user/profile.jpg"
                    var photoURL = user.photoURL;

                  }, function(error) {
                    // An error happened.
                  });     

                }
    });

As stated in firebase User Api here : https://firebase.google.com/docs/reference/js/firebase.User#updateProfile

Hope this helps

Answer 3

You can create a users endpoint and store custom user data in there.

function writeUserData(userId, name, email, imageUrl) {
  firebase.database().ref('users/' + userId).set({
    username: name,
    email: email,
    profile_picture : imageUrl,
    // Add more stuff here
  });
}

Have a look to https://firebase.google.com/docs/database/web/read-and-write