1 files changed, 18 insertions, 0 deletions
diff --git a/django/middleware/doc.py b/django/middleware/doc.py
new file mode 100644
index 0000000000..8f648e0665
--- /dev/null
+++ b/django/middleware/doc.py
@@ -0,0 +1,18 @@
+from django.conf import settings
+from django.utils import httpwrappers
+
+class XViewMiddleware:
+    """
+    Adds an X-View header to internal HEAD requests -- used by the documentation system.
+    """
+
+    def process_view(self, request, view_func, param_dict):
+        """
+        If the request method is HEAD and the IP is internal, quickly return
+        with an x-header indicating the view function.  This is used by the
+        documentation module to lookup the view function for an arbitrary page.
+        """
+        if request.META['REQUEST_METHOD'] == 'HEAD' and request.META['REMOTE_ADDR'] in settings.INTERNAL_IPS:
+            response = httpwrappers.HttpResponse()
+            response['X-View'] = "%s.%s" % (view_func.__module__, view_func.__name__)
+            return response