Class CommonMiddleware
"Common" middleware for taking care of some basic operations:
Declaration
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- Forbid access to User-Agents in settings.DISALLOWED_USER_AGENTS
- URL rewriting: Based on the APPEND_SLASH and PREPEND_WWW settings,
append missing slashes and/or prepends missing "www."s.
- If APPEND_SLASH is set and the initial URL doesn't end with a
slash, and it is not found in urlpatterns, form a new URL by
appending a slash at the end. If this new URL is found in
urlpatterns, return an HTTP redirect to this new URL; otherwise
process the initial URL as usual.
This behavior can be customized by subclassing CommonMiddleware and
overriding the response_redirect_class attribute.Methods
Raise a RuntimeError if settings.DEBUG is True and request.method is
POST, PUT, or PATCH.
▷ def process_request(self, request) Check for denied User-Agents and rewrite the URL based on settings.APPEND_SLASH and settings.PREPEND_WWW
▷ def process_response(self, request, response) 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.
▷ def should_redirect_with_slash(self, request) Return True if settings.APPEND_SLASH is True and appending a slash to the request path turns an invalid path into a valid one.