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Fonction condition - module django.views.decorators.http

Signature de la fonction condition

def condition(etag_func=None, last_modified_func=None) 

Description

condition.__doc__

    Decorator to support conditional retrieval (or change) for a view
    function.

    The parameters are callables to compute the ETag and last modified time for
    the requested resource, respectively. The callables are passed the same
    parameters as the view itself. The ETag function should return a string (or
    None if the resource doesn't exist), while the last_modified function
    should return a datetime object (or None if the resource doesn't exist).

    The ETag function should return a complete ETag, including quotes (e.g.
    '"etag"'), since that's the only way to distinguish between weak and strong
    ETags. If an unquoted ETag is returned (e.g. 'etag'), it will be converted
    to a strong ETag by adding quotes.

    This decorator will either pass control to the wrapped view function or
    return an HTTP 304 response (unmodified) or 412 response (precondition
    failed), depending upon the request method. In either case, the decorator
    will add the generated ETag and Last-Modified headers to the response if
    the headers aren't already set and if the request's method is safe.