Function get_cache_key

django/utils/cache.py:378–397

Return a cache key based on the request URL and query. It can be used in the request phase because it pulls the list of headers to take into account from the global URL registry and uses those to build a cache key to check against. If there isn't a headerlist stored, return Non

(request, key_prefix=None, method="GET", cache=None)

def get_cache_key(request, key_prefix=None, method="GET", cache=None):
    """
    Return a cache key based on the request URL and query. It can be used
    in the request phase because it pulls the list of headers to take into
    account from the global URL registry and uses those to build a cache key
    to check against.

    If there isn't a headerlist stored, return None, indicating that the page
    needs to be rebuilt.
    """
    if key_prefix is None:
        key_prefix = settings.CACHE_MIDDLEWARE_KEY_PREFIX
    cache_key = _generate_cache_header_key(key_prefix, request)
    if cache is None:
        cache = caches[settings.CACHE_MIDDLEWARE_ALIAS]
    headerlist = cache.get(cache_key)
    if headerlist is not None:
        return _generate_cache_key(request, method, headerlist, key_prefix)
    else:
        return None


def learn_cache_key(request, response, cache_timeout=None, key_prefix=None, cache=None):