http_responses.py

from django.http import HttpResponse
from django.template.loader import render_to_string
from django.template import RequestContext

from forum import settings

class HttpResponseServiceUnavailable(HttpResponse):
    def __init__(self, message):
        super(HttpResponseServiceUnavailable, self).__init__(
            content=render_to_string('503.html', {
                'message': message,
                'app_logo': settings.APP_LOGO,
                'app_title': settings.APP_TITLE
            }), status=503)

class HttpResponseUnauthorized(HttpResponse):
    def __init__(self, request):
        if request.user.is_authenticated():
            super(HttpResponseUnauthorized, self).__init__(
                content=render_to_string('403.html', context_instance=RequestContext(request)),
                status=403
            )
        else:
            super(HttpResponseUnauthorized, self).__init__(
                content=render_to_string('401.html', context_instance=RequestContext(request)),
                status=401
            )