Simplify monkey-patching of URLs into urlconf.

3 files changed, 17 insertions, 35 deletions

diff --git a/debug_toolbar/middleware.py b/debug_toolbar/middleware.py
index daea751..c95cade 100644
--- a/debug_toolbar/middleware.py
+++ b/debug_toolbar/middleware.py
@@ -4,17 +4,13 @@ Debug Toolbar middleware
 
 from __future__ import unicode_literals
 
-import imp
 import threading
 
 from django.conf import settings
 from django.http import HttpResponseRedirect
 from django.shortcuts import render
 from django.utils.encoding import force_text
-from django.utils.importlib import import_module
-from django.utils import six
 
-import debug_toolbar.urls
 from debug_toolbar.toolbar.loader import DebugToolbar
 from debug_toolbar.utils.settings import CONFIG
 
@@ -55,8 +51,6 @@ class DebugToolbarMiddleware(object):
     debug_toolbars = {}
 
     def __init__(self):
-        self._urlconfs = {}
-
         # The method to call to decide to show the toolbar
         self.show_toolbar = CONFIG['SHOW_TOOLBAR_CALLBACK'] or show_toolbar
 
@@ -66,26 +60,6 @@ class DebugToolbarMiddleware(object):
     def process_request(self, request):
         __traceback_hide__ = True                                       # noqa
         if self.show_toolbar(request):
-            urlconf = getattr(request, 'urlconf', settings.ROOT_URLCONF)
-            if isinstance(urlconf, six.string_types):
-                urlconf = import_module(getattr(request, 'urlconf', settings.ROOT_URLCONF))
-
-            if urlconf not in self._urlconfs:
-                new_urlconf = imp.new_module('urlconf')
-                new_urlconf.urlpatterns = (debug_toolbar.urls.urlpatterns +
-                                           list(urlconf.urlpatterns))
-
-                if hasattr(urlconf, 'handler403'):
-                    new_urlconf.handler403 = urlconf.handler403
-                if hasattr(urlconf, 'handler404'):
-                    new_urlconf.handler404 = urlconf.handler404
-                if hasattr(urlconf, 'handler500'):
-                    new_urlconf.handler500 = urlconf.handler500
-
-                self._urlconfs[urlconf] = new_urlconf
-
-            request.urlconf = self._urlconfs[urlconf]
-
             toolbar = DebugToolbar(request)
             for panel in toolbar.panels:
                 panel.enabled = panel.dom_id() not in request.COOKIES
diff --git a/debug_toolbar/models.py b/debug_toolbar/models.py
index 397771f..772b52b 100644
--- a/debug_toolbar/models.py
+++ b/debug_toolbar/models.py
@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
 
 from django.conf import settings
+from django.conf.urls import include, patterns, url
+from django.core.urlresolvers import reverse, NoReverseMatch
 from django.utils.importlib import import_module
 
 from debug_toolbar.toolbar.loader import load_panel_classes
@@ -36,5 +38,13 @@ if not any(is_toolbar_middleware(middleware)
     prepend_to_setting('MIDDLEWARE_CLASSES',
                        'debug_toolbar.middleware.DebugToolbarMiddleware')
 
+try:
+    reverse('djdt:render_panel')
+except NoReverseMatch:
+    urlconf_module = import_module(settings.ROOT_URLCONF)
+    urlconf_module.urlpatterns += patterns('',
+        url(r'^__debug__/', include('debug_toolbar.urls', namespace='djdt', app_name='djdt')),
+    )
+
 
 load_panel_classes()
diff --git a/debug_toolbar/urls.py b/debug_toolbar/urls.py
index 05ef245..860187a 100644
--- a/debug_toolbar/urls.py
+++ b/debug_toolbar/urls.py
@@ -1,20 +1,18 @@
 """
 URLpatterns for the debug toolbar.
 
-These should not be loaded explicitly; the debug toolbar middleware will patch
-this into the urlconf for the request.
+The debug toolbar middleware will monkey-patch them into the default urlconf
+if they aren't explicitly included.
 """
 
 from __future__ import unicode_literals
 
 from django.conf.urls import patterns, url
 
-_PREFIX = '__debug__'
-
 urlpatterns = patterns('debug_toolbar.views',                           # noqa
-    url(r'^%s/render_panel/$' % _PREFIX, 'render_panel', name='render_panel'),
-    url(r'^%s/sql_select/$' % _PREFIX, 'sql_select', name='sql_select'),
-    url(r'^%s/sql_explain/$' % _PREFIX, 'sql_explain', name='sql_explain'),
-    url(r'^%s/sql_profile/$' % _PREFIX, 'sql_profile', name='sql_profile'),
-    url(r'^%s/template_source/$' % _PREFIX, 'template_source', name='template_source'),
+    url(r'^render_panel/$', 'render_panel', name='render_panel'),
+    url(r'^sql_select/$', 'sql_select', name='sql_select'),
+    url(r'^sql_explain/$', 'sql_explain', name='sql_explain'),
+    url(r'^sql_profile/$', 'sql_profile', name='sql_profile'),
+    url(r'^template_source/$', 'template_source', name='template_source'),
 )