On Apr 5, 2008, at 1:13 PM, 张沈鹏(电子科大 毕/就业倒计 时...) wrote:
> thanks for you answer :) > > but I still have some problems > > It's to say I should clear session manual once I update the database ? > > can I set timeout somewhere to auto do this job ? > for a web application, you usually use a Session for the lifespan of a request - at the end of the request, you close it out. Pylons tutorial has an illustration of this pattern over at http://wiki.pylonshq.com/display/pylonsdocs/Using+SQLAlchemy+with+Pylons . About halfway through, the example illustartes modifying the base controller to say: def __call__(self, environ, start_response): try: return WSGIController.__call__(self, environ, start_response) finally: meta.Session.remove() SQLAlchemy 0.4.6 (likely version) will include an "auto-expire-on- commit()" feature which will make this step unnecessary, if you use a fully transactional Session. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---
