Set urlconf to None after changing SUBDOMAIN setting

readthedocs/core/middleware.py

@@ -9,6 +9,7 @@
 from django.contrib.sessions.middleware import SessionMiddleware
 from django.core.cache import cache
 from django.core.exceptions import ObjectDoesNotExist, MultipleObjectsReturned
+from django.core.urlresolvers import set_urlconf, get_urlconf
 from django.http import Http404, HttpResponseBadRequest
 
 from readthedocs.core.utils import cname_to_slug
@@ -130,6 +131,12 @@ def process_request(self, request):
         # Normal request.
         return None
 
+    def process_response(self, request, response):
+        # Reset URLconf for this thread
+        # to the original one.
+        set_urlconf(None)
+        return response
+
 
 class SingleVersionMiddleware(object):
 

readthedocs/rtd_tests/tests/test_middleware.py

@@ -1,11 +1,13 @@
 from __future__ import absolute_import
+
 from django.http import Http404
 from django.core.cache import cache
+from django.core.urlresolvers import get_urlconf, set_urlconf
 from django.test import TestCase
 from django.test.client import RequestFactory
 from django.test.utils import override_settings
 
-from django_dynamic_fixture import get, new
+from django_dynamic_fixture import get
 
 from corsheaders.middleware import CorsMiddleware
 from mock import patch
@@ -40,6 +42,29 @@ def test_proper_subdomain(self):
         self.assertEqual(request.subdomain, True)
         self.assertEqual(request.slug, 'pip')
 
+    @override_settings(PRODUCTION_DOMAIN='readthedocs.org')
+    def test_restore_urlconf_after_request(self):
+        """
+        The urlconf attribute for the current thread
+        should remain intact after each request,
+        When is set to None it means 'use default from settings'.
+        """
+        set_urlconf(None)
+        urlconf = get_urlconf()
+        self.assertIsNone(urlconf)
+
+        self.client.get(self.url, HTTP_HOST='pip.readthedocs.org')
+        urlconf = get_urlconf()
+        self.assertIsNone(urlconf)
+
+        self.client.get(self.url)
+        urlconf = get_urlconf()
+        self.assertIsNone(urlconf)
+
+        self.client.get(self.url, HTTP_HOST='pip.readthedocs.org')
+        urlconf = get_urlconf()
+        self.assertIsNone(urlconf)
+
     @override_settings(PRODUCTION_DOMAIN='prod.readthedocs.org')
     def test_subdomain_different_length(self):
         request = self.factory.get(self.url, HTTP_HOST='pip.prod.readthedocs.org')

readthedocs/rtd_tests/tests/test_subprojects.py

@@ -185,7 +185,6 @@ def setUp(self):
         relation.save()
         fixture.get(Project, slug='sub_alias', language='ya')
 
-
     @override_settings(
             PRODUCTION_DOMAIN='readthedocs.org',
             USE_SUBDOMAIN=False,