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-rw-r--r--appengine_django/auth/middleware.py36
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diff --git a/appengine_django/auth/middleware.py b/appengine_django/auth/middleware.py
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+# Copyright 2008 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from django.contrib.auth.models import AnonymousUser
+
+from google.appengine.api import users
+
+from appengine_django.auth.models import User
+
+
+class LazyUser(object):
+ def __get__(self, request, obj_type=None):
+ if not hasattr(request, '_cached_user'):
+ user = users.get_current_user()
+ if user:
+ request._cached_user = User.get_djangouser_for_user(user)
+ else:
+ request._cached_user = AnonymousUser()
+ return request._cached_user
+
+
+class AuthenticationMiddleware(object):
+ def process_request(self, request):
+ request.__class__.user = LazyUser()
+ return None