我们从Python开源项目中，提取了以下16个代码示例，用于说明如何使用django.conf.settings.USE_ETAGS。
def process_response(self, request, response): """ Calculate the ETag, if needed. When the status code of the response is 404, it may redirect to a path with an appended slash if should_redirect_with_slash() returns True. """ # If the given URL is "Not Found", then check if we should redirect to # a path with a slash appended. if response.status_code == 404: if self.should_redirect_with_slash(request): return self.response_redirect_class(self.get_full_path_with_slash(request)) if settings.USE_ETAGS: if not response.has_header('ETag'): set_response_etag(response) if response.has_header('ETag'): return get_conditional_response( request, etag=unquote_etag(response['ETag']), response=response, ) return response
def patch_response_headers(response, cache_timeout=None): """ Adds some useful headers to the given HttpResponse object: ETag, Last-Modified, Expires and Cache-Control Each header is only added if it isn't already set. cache_timeout is in seconds. The CACHE_MIDDLEWARE_SECONDS setting is used by default. """ if cache_timeout is None: cache_timeout = settings.CACHE_MIDDLEWARE_SECONDS if cache_timeout < 0: cache_timeout = 0 # Can't have max-age negative if settings.USE_ETAGS and not response.has_header('ETag'): if hasattr(response, 'render') and callable(response.render): response.add_post_render_callback(set_response_etag) else: response = set_response_etag(response) if not response.has_header('Last-Modified'): response['Last-Modified'] = http_date() if not response.has_header('Expires'): response['Expires'] = http_date(time.time() + cache_timeout) patch_cache_control(response, max_age=cache_timeout)
def process_response(self, request, response): """ Calculate the ETag, if needed. """ if settings.USE_ETAGS: if response.has_header('ETag'): etag = response['ETag'] elif response.streaming: etag = None else: etag = '"%s"' % hashlib.md5(response.content).hexdigest() if etag is not None: if (200 <= response.status_code < 300 and request.META.get('HTTP_IF_NONE_MATCH') == etag): cookies = response.cookies response = http.HttpResponseNotModified() response.cookies = cookies else: response['ETag'] = etag return response
def patch_response_headers(response, cache_timeout=None): """ Add HTTP caching headers to the given HttpResponse: Expires and Cache-Control. Each header is only added if it isn't already set. cache_timeout is in seconds. The CACHE_MIDDLEWARE_SECONDS setting is used by default. """ if cache_timeout is None: cache_timeout = settings.CACHE_MIDDLEWARE_SECONDS if cache_timeout < 0: cache_timeout = 0 # Can't have max-age negative if settings.USE_ETAGS and not response.has_header('ETag'): if hasattr(response, 'render') and callable(response.render): response.add_post_render_callback(set_response_etag) else: response = set_response_etag(response) if not response.has_header('Expires'): response['Expires'] = http_date(time.time() + cache_timeout) patch_cache_control(response, max_age=cache_timeout)
def patch_response_headers(response, cache_timeout=None): """ Adds some useful headers to the given HttpResponse object: ETag, Last-Modified, Expires and Cache-Control Each header is only added if it isn't already set. cache_timeout is in seconds. The CACHE_MIDDLEWARE_SECONDS setting is used by default. """ if cache_timeout is None: cache_timeout = settings.CACHE_MIDDLEWARE_SECONDS if cache_timeout < 0: cache_timeout = 0 # Can't have max-age negative if settings.USE_ETAGS and not response.has_header('ETag'): if hasattr(response, 'render') and callable(response.render): response.add_post_render_callback(_set_response_etag) else: response = _set_response_etag(response) if not response.has_header('Last-Modified'): response['Last-Modified'] = http_date() if not response.has_header('Expires'): response['Expires'] = http_date(time.time() + cache_timeout) patch_cache_control(response, max_age=cache_timeout)
def process_response(self, request, response): """ Calculate the ETag, if needed. When the status code of the response is 404, it may redirect to a path with an appended slash if should_redirect_with_slash() returns True. """ # If the given URL is "Not Found", then check if we should redirect to # a path with a slash appended. if response.status_code == 404: if self.should_redirect_with_slash(request): return self.response_redirect_class(self.get_full_path_with_slash(request)) if settings.USE_ETAGS and self.needs_etag(response): if not response.has_header('ETag'): set_response_etag(response) if response.has_header('ETag'): return get_conditional_response( request, etag=response['ETag'], response=response, ) # Add the Content-Length header to non-streaming responses if not # already set. if not response.streaming and not response.has_header('Content-Length'): response['Content-Length'] = str(len(response.content)) return response
def process_response(self, request, response): """ Calculate the ETag, if needed. When the status code of the response is 404, it may redirect to a path with an appended slash if should_redirect_with_slash() returns True. """ # If the given URL is "Not Found", then check if we should redirect to # a path with a slash appended. if response.status_code == 404: if self.should_redirect_with_slash(request): return self.response_redirect_class(self.get_full_path_with_slash(request)) if settings.USE_ETAGS and self.needs_etag(response): warnings.warn( "The USE_ETAGS setting is deprecated in favor of " "ConditionalGetMiddleware which sets the ETag regardless of " "the setting. CommonMiddleware won't do ETag processing in " "Django 2.1.", RemovedInDjango21Warning ) if not response.has_header('ETag'): set_response_etag(response) if response.has_header('ETag'): return get_conditional_response( request, etag=response['ETag'], response=response, ) # Add the Content-Length header to non-streaming responses if not # already set. if not response.streaming and not response.has_header('Content-Length'): response['Content-Length'] = str(len(response.content)) return response
def patch_response_headers(response, cache_timeout=None): """ Add HTTP caching headers to the given HttpResponse: Expires and Cache-Control. Each header is only added if it isn't already set. cache_timeout is in seconds. The CACHE_MIDDLEWARE_SECONDS setting is used by default. """ if cache_timeout is None: cache_timeout = settings.CACHE_MIDDLEWARE_SECONDS if cache_timeout < 0: cache_timeout = 0 # Can't have max-age negative if settings.USE_ETAGS and not response.has_header('ETag'): warnings.warn( "The USE_ETAGS setting is deprecated in favor of " "ConditionalGetMiddleware which sets the ETag regardless of the " "setting. patch_response_headers() won't do ETag processing in " "Django 2.1.", RemovedInDjango21Warning ) if hasattr(response, 'render') and callable(response.render): response.add_post_render_callback(set_response_etag) else: response = set_response_etag(response) if not response.has_header('Expires'): response['Expires'] = http_date(time.time() + cache_timeout) patch_cache_control(response, max_age=cache_timeout)
