| class LazyUser(object): |
| def __get__(self, request, obj_type=None): |
| if not hasattr(request, '_cached_user'): |
| from django.contrib.auth import get_user |
| request._cached_user = get_user(request) |
| return request._cached_user |
| |
| class AuthenticationMiddleware(object): |
| def process_request(self, request): |
| assert hasattr(request, 'session'), "The Django authentication middleware requires session middleware to be installed. Edit your MIDDLEWARE_CLASSES setting to insert 'django.contrib.sessions.middleware.SessionMiddleware'." |
| request.__class__.user = LazyUser() |
| return None |