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
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):
if __name__ == 'myproject.myapp':
dispatcher.connect(signal_handler, ...)
Both approaches seem to work fine (in the local test server), however since I
am neither an experienced python nor django programmer, I'd welcome any
opinions from more seasoned programmers about the possible up- and downsides
(or even unintended side-effects) of these two approaches.
thanks,
chris
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