Automatically enable DebugToolbarMiddleware when it isn't enabled.

1 files changed, 12 insertions, 5 deletions

diff --git a/debug_toolbar/models.py b/debug_toolbar/models.py
index 3bdb639..397771f 100644
--- a/debug_toolbar/models.py
+++ b/debug_toolbar/models.py
@@ -7,18 +7,16 @@ from debug_toolbar.toolbar.loader import load_panel_classes
 from debug_toolbar.middleware import DebugToolbarMiddleware
 
 
-for middleware_path in settings.MIDDLEWARE_CLASSES:
+def is_toolbar_middleware(middleware_path):
     # Replace this with import_by_path in Django >= 1.6.
     try:
         mod_path, cls_name = middleware_path.rsplit('.', 1)
         mod = import_module(mod_path)
         middleware_cls = getattr(mod, cls_name)
     except (AttributeError, ImportError, ValueError):
-        continue
+        return
+    return issubclass(middleware_cls, DebugToolbarMiddleware)
 
-    if issubclass(middleware_cls, DebugToolbarMiddleware):
-        load_panel_classes()
-        break
 
 def prepend_to_setting(setting_name, value):
     """Insert value at the beginning of a list or tuple setting."""
@@ -31,3 +29,12 @@ def prepend_to_setting(setting_name, value):
 if not settings.INTERNAL_IPS:
     prepend_to_setting('INTERNAL_IPS', '127.0.0.1')
     prepend_to_setting('INTERNAL_IPS', '::1')
+
+
+if not any(is_toolbar_middleware(middleware)
+           for middleware in settings.MIDDLEWARE_CLASSES):
+    prepend_to_setting('MIDDLEWARE_CLASSES',
+                       'debug_toolbar.middleware.DebugToolbarMiddleware')
+
+
+load_panel_classes()