| 1234567891011121314151617181920212223242526 |
- from django.conf import settings
- from django.contrib.messages.storage import default_storage
- from django.utils.deprecation import MiddlewareMixin
-
-
- class MessageMiddleware(MiddlewareMixin):
- """
- Middleware that handles temporary messages.
- """
-
- def process_request(self, request):
- request._messages = default_storage(request)
-
- def process_response(self, request, response):
- """
- Update the storage backend (i.e., save the messages).
-
- Raise ValueError if not all messages could be stored and DEBUG is True.
- """
- # A higher middleware layer may return a request which does not contain
- # messages storage, so make no assumption that it will be there.
- if hasattr(request, '_messages'):
- unstored_messages = request._messages.update(response)
- if unstored_messages and settings.DEBUG:
- raise ValueError('Not all temporary messages could be stored.')
- return response
|
