app/django/core/xheaders.py
author Todd Larsen <tlarsen@google.com>
Fri, 18 Jul 2008 18:22:23 +0000
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Major reorganization of the soc svn repo, to merge into a single App Engine image (to make development easier, now that only a single app will run all Google Open Source programs).
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"""
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Pages in Django can are served up with custom HTTP headers containing useful
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information about those pages -- namely, the content type and object ID.
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This module contains utility functions for retrieving and doing interesting
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things with these special "X-Headers" (so called because the HTTP spec demands
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that custom headers are prefixed with "X-").
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Next time you're at slashdot.org, watch out for X-Fry and X-Bender. :)
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"""
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def populate_xheaders(request, response, model, object_id):
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    """
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    Adds the "X-Object-Type" and "X-Object-Id" headers to the given
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    HttpResponse according to the given model and object_id -- but only if the
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    given HttpRequest object has an IP address within the INTERNAL_IPS setting
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    or if the request is from a logged in staff member.
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    """
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    from django.conf import settings
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    if (request.META.get('REMOTE_ADDR') in settings.INTERNAL_IPS
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            or (hasattr(request, 'user') and request.user.is_authenticated()
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                and request.user.is_staff)):
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        response['X-Object-Type'] = "%s.%s" % (model._meta.app_label, model._meta.object_name.lower())
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        response['X-Object-Id'] = str(object_id)