first commit

Change-Id: I8a65ee5527dd16d81e87c8ac5d4bdb471e5e759d
Signed-off-by: lombardof <flombardo@cnit.it>
diff --git a/sf_user/sessions.py b/sf_user/sessions.py
new file mode 100644
index 0000000..df4ed71
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+++ b/sf_user/sessions.py
@@ -0,0 +1,32 @@
+#
+#   Copyright 2018 CNIT - Consorzio Nazionale Interuniversitario per le Telecomunicazioni
+#
+#   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  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.sessions.backends.db import SessionStore as DBStore
+import sf_user
+
+class SessionStore(DBStore):
+    @classmethod
+    def get_model_class(cls):
+        return sf_user.models.CustomSession
+
+    def create_model_instance(self, data):
+        obj = super(SessionStore, self).create_model_instance(data)
+        try:
+            account_id = int(data.get('_auth_user_id'))
+        except (ValueError, TypeError):
+            account_id = None
+        obj.account_id = account_id
+        return obj
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