arrowcounter/user/forms.py

from django.contrib.auth.forms import (UserCreationForm, UsernameField,
AuthenticationForm)
from django import forms
from django.contrib.auth.models import User
from django.conf import settings
from .models import CounterUser

class RegistrationForm(UserCreationForm):
    email = forms.EmailField(label = "Email")

    class Meta:
        model = CounterUser
        fields = ("username", "email", )
        field_classes = {'username': UsernameField, 'email': forms.EmailField}

    def save(self, commit=True):
        user = super(RegistrationForm, self).save(commit=False)
        user.email = self.cleaned_data["email"]
        if commit:
            user.save()
        return user