Stopped registering the sessions tests models to the sessions app.

tests/sessions_tests/models.py

@@ -0,0 +1,40 @@
+"""
+This custom Session model adds an extra column to store an account ID. In
+real-world applications, it gives you the option of querying the database for
+all active sessions for a particular account.
+"""
+from django.contrib.sessions.backends.db import SessionStore as DBStore
+from django.contrib.sessions.base_session import AbstractBaseSession
+from django.db import models
+
+
+class CustomSession(AbstractBaseSession):
+    """
+    A session model with a column for an account ID.
+    """
+    account_id = models.IntegerField(null=True, db_index=True)
+
+    @classmethod
+    def get_session_store_class(cls):
+        return SessionStore
+
+
+class SessionStore(DBStore):
+    """
+    A database session store, that handles updating the account ID column
+    inside the custom session model.
+    """
+    @classmethod
+    def get_model_class(cls):
+        return 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