Registration with CBVs

Forms.py

from django import forms
from django.forms import ModelForm
from django.contrib.auth.models import User

class RegistrationForm(ModelForm):
	password_1 = forms.CharField(label=(u'Verify Password'), widget=forms.PasswordInput())

	class Meta:
		model = User
		fields = ('username', 'password')

	def __init__(self, *args, **kwargs):
		super(RegistrationForm, self).__init__(*args, **kwargs)
		self.fields['username'].help_text = None
		self.fields['password'].widget = forms.PasswordInput()

	def clean_username(self):
		username = self.cleaned_data['username']
		try:
			User.objects.get(username=username)
		except User.DoesNotExist:
			return username
		raise forms.ValidationError("That username is already taken. Please select another.")

	def clean(self):
		password = self.cleaned_data.get('password', None)
		password_1 = self.cleaned_data.get('password_1', None)
		if password and password_1 and (password == password_1):
			return self.cleaned_data
		else:
			raise forms.ValidationError("The passwords did not match. Please try again.")

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

Views.py

from django.shortcuts import render
from django.core.urlresolvers import reverse
from django.http import HttpResponse, HttpResponseRedirect
from django.views.generic import FormView
from django.contrib.auth import authenticate, login

from forms import RegistrationForm

# Create your views here.

class RegisterView(FormView):
    form_class = RegistrationForm
    template_name = 'registration/register.html'

    def get(self, request, *args, **kwargs):
        form = self.form_class()
        return render(request, self.template_name, {'form': form})

    def auth_login(self, request, username, password):
        user = authenticate(username=username, password=password)
        login(request, user)

    def post(self, request, *args, **kwargs):
        form = self.form_class(request.POST)
        if form.is_valid():
            form.save()
            self.auth_login(self.request, request.POST['username'], request.POST['password'])
            return HttpResponseRedirect(reverse('index'))
        else:
            return render(request, self.template_name, {'form': form})