Django authentication middleware to automatically authenticate the users

authentication_middleware.py

from django.contrib import auth
from django.contrib.auth.middleware import MiddlewareMixin
from django.http import HttpResponseForbidden


class AutomaticUserLoginMiddleware(MiddlewareMixin):

    def process_view(self, request, view_func, view_args, view_kwargs):
        if not AutomaticUserLoginMiddleware._is_user_authenticated(request):
            user = auth.authenticate(request)
            if user is None:
                return HttpResponseForbidden()

            request.user = user
            auth.login(request, user)

    @staticmethod
    def _is_user_authenticated(request):
        user = request.user
        return user and user.is_authenticated