def save(self, *args, **kwargs):
"""Send the vote_changed signal if this is a new object or if
the vote has changed since last save.
"""
newly_created_vote = True if not self.pk else False
super(Vote, self).save(*args, **kwargs)
# Send signal in post_save.
if newly_created_vote:
vote_changed.send(
self.__class__,
instance=self,
old_vote=None,
new_vote=self.vote
)
self._cached_vote = self.vote
elif self.vote != self._cached_vote:
vote_changed.send(
self.__class__,
instance=self,
old_vote=self._cached_vote,
new_vote=self.vote
)
self._cached_vote = self.vote
def send_vote_changed_on_delete(sender, instance, **kwargs):
"""Send vote_changed on a hard delete of a vote."""
vote_changed.send(
sender,
instance=instance,
old_vote=instance._cached_vote,
new_vote=None
)
