On Sat, 2008-04-26 at 14:57 +0200, chris vigelius wrote: > hi, > > trying to work around bug #3951 (http://code.djangoproject.com/ticket/3951), > I've found two possible approaches which both seem to solve my problem (I > send a notification mail in response to the signal and I don't want the mail > to be sent twice). > > The first approach would be to add a flag to the instance: > > def signal_handler(sender, instance, **kwargs): > if hasattr(instance, 'my_secret_flag'): > return > # normal signal handler follows here > # ... > instance.my_secret_flag = True
I don't think this will work, although it depends on what signal you're responding to. It kind of relies on the assumption that you'll only ever trigger the signal once per instance, which may or may not be true. For example, if something's done every time the instance is saved and you call save() then do something, then call save() again ,the second save() call won't trigger the signal handling. Maybe that works in your case, but it's probably a bit fragile. > The second, and possibly more elegant solution would be to compare __name__ > against the full module path (as I understand it, #3951 is caused by > importing the module once with an absolute path and once with a relative > one): There are many ways something can be imported. Not everything just has a two-level hierachy (project/appname/), so it's more complicated than this in the general case. However, if this is the sort of directory structure you have, it will do as a workaround. Regards, Malcolm -- Experience is something you don't get until just after you need it. http://www.pointy-stick.com/blog/ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
