I would like to do something if the django user password has been set or update.
So i trigger signals.post_save with the User class, like this:
===============================================================================
from django.db.models import signals
from django.dispatch import dispatcher
def update(sender, instance, signal, *args, **kwargs):
user_obj = instance
...
user_obj.message_set.create(message="Updated!")
dispatcher.connect(update, signal=signals.post_save, sender=User)
===============================================================================
But my function 'update' is not only called if the user password changed.
The problem is, in the User model exists e.g. 'last_login'. So the save method
called every time, the user logged in :(
One idea is this:
===============================================================================
old_passwords = {}
def save_old_pass(sender, instance, signal, *args, **kwargs):
user_obj = instance
old_pass = user_obj.password
old_passwords[user_obj] = old_pass
def update(sender, instance, signal, *args, **kwargs):
user_obj = instance
new_password = user_obj.password
if user_obj in old_passwords and old_passwords[user_obj] == new_password:
# Nothing to change
return
...
user_obj.message_set.create(message="Updated!")
from django.db.models import signals
from django.dispatch import dispatcher
dispatcher.connect(save_old_pass, signal=signals.post_init, sender=User)
dispatcher.connect(update, signal=signals.post_save, sender=User)
===============================================================================
This works, but save_old_pass() would be often called, if the user is logged in.
So it's not a really good idea.
Any better ideas?
--
Mfg.
Jens Diemer
----
A django powered CMS: http://www.pylucid.org
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