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+"""
+Pages in Django can are served up with custom HTTP headers containing useful
+information about those pages -- namely, the content type and object ID.
+
+This module contains utility functions for retrieving and doing interesting
+things with these special "X-Headers" (so called because the HTTP spec demands
+that custom headers are prefixed with "X-").
+
+Next time you're at slashdot.org, watch out for X-Fry and X-Bender. :)
+"""
+
+def populate_xheaders(request, response, model, object_id):
+ """
+ Adds the "X-Object-Type" and "X-Object-Id" headers to the given
+ HttpResponse according to the given model and object_id -- but only if the
+ given HttpRequest object has an IP address within the INTERNAL_IPS setting
+ or if the request is from a logged in staff member.
+ """
+ from django.conf import settings
+ if (request.META.get('REMOTE_ADDR') in settings.INTERNAL_IPS
+ or (hasattr(request, 'user') and request.user.is_authenticated()
+ and request.user.is_staff)):
+ response['X-Object-Type'] = "%s.%s" % (model._meta.app_label, model._meta.object_name.lower())
+ response['X-Object-Id'] = str(object_id)