Fix db_session object

database/database.py

@@ -15,11 +15,11 @@ engine = create_engine('postgresql://{0}:{1}@{2}/{3}'.format(
     db_user, db_password, db_host, db_name))
 
 Session.configure(bind=engine, autocommit=True)
-#db_session = scoped_session(sessionmaker(autocommit=False,
-#                                     autoflush=False,
-#                                     bind=engine))
+db_session = scoped_session(sessionmaker(autocommit=False,
+                                     autoflush=False,
+                                     bind=engine))
 
-##Base.query = Session.query_property()
+Base.query = db_session.query_property()
 
 def init_db(engine=engine):
     # import all modules here that might define models so that