gistfile1.txt

from django.middleware.cache import UpdateCacheMiddleware

from django.utils.cache import learn_cache_key, get_max_age


class UpdateCacheMiddlewareNoHeaders(UpdateCacheMiddleware):
    """
    Just like UpdateCacheMiddleware but we don't set cache headers in the
    HTTP response.
    """
    def process_response(self, request, response):
        """Sets the cache, if needed."""
        if not self._should_update_cache(request, response):
            # We don't need to update the cache, just return.
            return response
        if not response.status_code == 200:
            return response
        # Try to get the timeout from the "max-age" section of the "Cache-
        # Control" header before reverting to using the default cache_timeout
        # length.
        timeout = get_max_age(response)
        if timeout == None:
            timeout = self.cache_timeout
        elif timeout == 0:
            # max-age was set to 0, don't bother caching.
            return response
        #patch_response_headers(response, timeout)
        if timeout:
            cache_key = learn_cache_key(request, response, timeout, self.key_prefix, cache=self.cache)
            if hasattr(response, 'render') and callable(response.render):
                response.add_post_render_callback(
                    lambda r: self.cache.set(cache_key, r, timeout)
                )
            else:
                self.cache.set(cache_key, response, timeout)
        return response