Merge pull request #3771 from duynhaaa/patch-1

Update SQLAlchemy integration tutorial to remove `sqlalchemy.MetaData.bind`'s usage

Author: digitalresistor

docs/quick_tutorial/databases/tutorial/__init__.py

@@ -7,7 +7,6 @@
 def main(global_config, **settings):
     engine = engine_from_config(settings, 'sqlalchemy.')
     DBSession.configure(bind=engine)
-    Base.metadata.bind = engine
 
     config = Configurator(settings=settings,
                           root_factory='tutorial.models.Root')
@@ -18,4 +17,4 @@ def main(global_config, **settings):
     config.add_route('wikipage_edit', '/{uid}/edit')
     config.add_static_view('deform_static', 'deform:static/')
     config.scan('.views')
-    return config.make_wsgi_app()
+    return config.make_wsgi_app()