app/django/http/utils.py
author Todd Larsen <tlarsen@google.com>
Sat, 04 Oct 2008 07:14:11 +0000
changeset 281 7caa8951cbc9
parent 54 03e267d67478
child 323 ff1a9aa48cfd
permissions -rw-r--r--
Url and Page classes used to encapsulate the "site map" information (URL regular expressions, Django views, menu item names, etc.) and the relation between pages in the site map. There are still lots of TODOs in this first pass. Patch by: Todd Larsen Review by: to-be-reviewed
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"""
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Functions that modify an HTTP request or response in some way.
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"""
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# This group of functions are run as part of the response handling, after
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# everything else, including all response middleware. Think of them as
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# "compulsory response middleware". Be careful about what goes here, because
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# it's a little fiddly to override this behavior, so they should be truly
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# universally applicable.
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def fix_location_header(request, response):
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    """
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    Ensures that we always use an absolute URI in any location header in the
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    response. This is required by RFC 2616, section 14.30.
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    Code constructing response objects is free to insert relative paths, as
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    this function converts them to absolute paths.
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    """
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    if 'Location' in response and request.get_host():
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        response['Location'] = request.build_absolute_uri(response['Location'])
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    return response
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def conditional_content_removal(request, response):
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    """
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    Removes the content of responses for HEAD requests, 1xx, 204 and 304
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    responses. Ensures compliance with RFC 2616, section 4.3.
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    """
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    if 100 <= response.status_code < 200 or response.status_code in (204, 304):
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       response.content = ''
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       response['Content-Length'] = 0
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    if request.method == 'HEAD':
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        response.content = ''
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    return response