.

rad/views.py

@@ -52,6 +52,11 @@ from generic.models import QuestionNote
 
 import json
 
+from django.shortcuts import (
+render_to_response
+)
+from django.template import RequestContext
+
 def feedback_checker(user):
     return user.groups.filter(name="feedback_checker").exists()
 
@@ -328,3 +333,14 @@ def view_feedback(request):
             "notes": feedback_notes,
         },
     )
+
+# HTTP Error 400
+def page_not_found(request):
+    response = render_to_response(
+        '404.html',
+        context_instance=RequestContext(request)
+        )
+
+    response.status_code = 404
+
+    return response