Modified login_required middleware for performing custom auth tasks in django.

django_login_wrapper.py

from django.http import HttpResponse
from json import dumps


def errorify(message):
    return HttpResponse(dumps({
        'error': message
    }), content_type = 'application/json')


def login_required_mod(view_func, group=None):
    def wrapper(request, *args, **kw):
        user=request.user
        if not user.id:
            message = "Login required"
            return errorify(message)
        if group is not None and not user.groups.filter(name=group).exists():
            message = "Not adequate permission"
            return errorify(message)
        return view_func(request, *args, **kw)
    return wrapper