Let self.Model.metadata.bind ot be self.engine, so that custom sqlalchemy column (eg. geoalchemy) can get correct dialect, otherwise the dialect will be default and str(query) will fail

jqxl0205 · mitsuhiko · commit f2ef848252ee · 2010-11-19T13:55:14.000+01:00
Signed-off-by: Armin Ronacher &lt;armin.ronacher@active-4.com&gt;
diff --git a/flaskext/sqlalchemy.py b/flaskext/sqlalchemy.py
@@ -525,6 +525,9 @@ def init_app(self, app):
         app.config.setdefault('SQLALCHEMY_POOL_TIMEOUT', None)
         app.config.setdefault('SQLALCHEMY_POOL_RECYCLE', None)
 
+        self.app = app
+        self.Model.metadata.bind = self.engine
+
         @app.after_request
         def shutdown_session(response):
             self.session.remove()
