django-allauth - Overriding default signup form

Question

I'm using this code (in forms.py) for my custom signup form for allauth:

class RegistrationForm(UserCreationForm):
    birth_date = forms.DateField(widget=extras.SelectDateWidget(years=BIRTH_DATE_YEARS))

    class Meta:
        model = get_user_model()
        fields = ('username', 'email', 'password1', 'password2', 'first_name', 'last_name', 'gender', 'birth_date', 'city', 'country')

I have of course specified ACCOUNT_SIGNUP_FORM_CLASS in settings.py to point to this form and it displays the fields which I've put in it. However, it does not work on submission, even if I put signup method it never gets invoked. I've tried with the save but still it's the same - it raises an error that one of my custom added fields is blank while creating user and saving it to the database. So, what's the correct code for achieving this?

Answer 1

I've made it thanks to @rakwen who has found the correct solution here. I wrote my custom adapter and put it in adapters.py in my app:

from allauth.account.adapter import DefaultAccountAdapter

class AccountAdapter(DefaultAccountAdapter):
    def save_user(self, request, user, form, commit=False):
        data = form.cleaned_data
        user.username = data['username']
        user.email = data['email']
        user.first_name = data['first_name']
        user.last_name = data['last_name']
        user.gender = data['gender']
        user.birth_date = data['birth_date']
        user.city = data['city']
        user.country = data['country']
        if 'password1' in data:
            user.set_password(data['password1'])
        else:
            user.set_unusable_password()
        self.populate_username(request, user)
        if commit:
            user.save()
        return user

Then I've specified ACCOUNT_ADAPTER in settings.py to point to that adapter, and it finally started to work!