signupform

forms.py

from django import forms
from django.contrib.auth.models import User
from django.contrib.auth.forms import UserCreationForm
from django.utils.translation import ugettext as _
 
class SignupForm(UserCreationForm):
    def __init__(self, *args, **kwargs):
        super(SignupForm, self).__init__(*args, **kwargs)
        self.fields.pop('username')
        
    email = forms.EmailField(required=True)
 
    class Meta:
        model = User
        fields = ("email", "password1", "password2",)

    def clean_email(self):
        email = self.cleaned_data['email']
        try:
            user = User.objects.get(email=email)
            raise forms.ValidationError(_("Email already exists."))
        except User.DoesNotExist:
            return email

        return email

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