registro de usuario e userprofile

registro.py

# forms.py

class UserProfileForm(forms.ModelForm):
    class Meta:
        model = UserProfile
        exclude = ('user',)

class UserForm(UserCreationForm):
    def __init__(self, *args, **kwargs):
        super(UserForm, self).__init__(*args, **kwargs)

    class Meta:
        model = User
        fields = ('username', 'first_name', 'last_name', 'email')

# views.py

def register(request):
    userform = UserForm(request.POST or None)
    userprofileform = UserProfileForm(request.POST or None)

    if userform.is_valid() and userprofileform.is_valid():
        user = userform.save()
        userprofile = userprofileform.save(commit=False)
        userprofile.user = user
        userprofile.save()
        return redirect(reverse_lazy('accounts:register'))

    return render_to_response(
        'accounts/register.html',
        dict(userform=userform, userprofileform=userprofileform),
        context_instance=RequestContext(request),
    )