Django Facebook Mixins

mixins.py

from django.conf import settings

from django.http import HttpResponse
from django.shortcuts import redirect
from django.utils.decorators import method_decorator
from fandjango.decorators import facebook_authorization_required


facebook_redirect_uri = 'https://www.facebook.com/pages/{page_name_id}?sk=app_{app_id}'.format(
    page_name_id=settings.FACEBOOK_PAGE_NAME_ID,
    app_id=settings.FACEBOOK_APPLICATION_ID
)


class LikedMixin(object):
    def dispatch(self, request, *args, **kwargs):
        if not request.facebook:
            return redirect(facebook_redirect_uri)
        if not request.facebook.signed_request.page.is_liked:
            return redirect('facebook_game:like')
        if kwargs is None:
            kwargs = {}
        return super(LikedMixin, self).dispatch(request, *args, **kwargs)


class AuthorizedAppMixin(LikedMixin):
    @method_decorator(facebook_authorization_required)
    def dispatch(self, request, redirect_uri=facebook_redirect_uri, *args, **kwargs):
        if kwargs is None:
            kwargs = {}
        return super(AuthorizedAppMixin, self).dispatch(request, *args, **kwargs)