Added support for newer versions of Django.

Author: Alireza Amouzadeh

.gitignore

@@ -19,6 +19,8 @@ lib64/
 parts/
 sdist/
 var/
+/.idea
+.venv
 *.egg-info/
 .installed.cfg
 *.egg

maintenancemode/http.py

@@ -1,5 +1,4 @@
 # -*- coding: utf-8 -*-
-
 from django.http import HttpResponse
 
 

maintenancemode/middleware.py

@@ -1,21 +1,22 @@
 # -*- coding: utf-8 -*-
 
 import re
-import django
 
 from django.conf import urls
-from django.core import urlresolvers
+from django.http import Http404
+from django.utils.deprecation import MiddlewareMixin
 
-from .conf import settings
+from maintenancemode.http import HttpResponseTemporaryUnavailable
 from . import utils as maintenance
+from .conf import settings
 
 urls.handler503 = 'maintenancemode.views.temporary_unavailable'
 urls.__all__.append('handler503')
 
 IGNORE_URLS = tuple([re.compile(u) for u in settings.MAINTENANCE_IGNORE_URLS])
 
 
-class MaintenanceModeMiddleware(object):
+class MaintenanceModeMiddleware(MiddlewareMixin):
 
     def process_request(self, request):
         # Allow access if middleware is not activated
@@ -35,8 +36,8 @@ def process_request(self, request):
             return None
 
         # Allow access if the user doing the request is logged in and a
-        # staff member.
-        if hasattr(request, 'user') and request.user.is_staff:
+        # superuser member.
+        if hasattr(request, 'user') and request.user.is_superuser:
             return None
 
         # Check if a path is explicitly excluded from maintenance mode
@@ -45,11 +46,4 @@ def process_request(self, request):
                 return None
 
         # Otherwise show the user the 503 page
-        resolver = urlresolvers.get_resolver(None)
-
-        if django.VERSION < (1, 8):
-            callback, param_dict = resolver._resolve_special('503')
-        else:
-            callback, param_dict = resolver.resolve_error_handler('503')
-
-        return callback(request, **param_dict)
+        return HttpResponseTemporaryUnavailable()