It should work in pre_save, but by the time you reach post_save, the database ID will be associated with the new values.
On Oct 7, 1:32 pm, Aaron <aa...@genieknows.com> wrote: > On Oct 7, 2:14 pm, Nan <ringe...@gmail.com> wrote: > > > class Foo(models.Model): > > bar = models.IntegerField() > > > def save(self, force_insert=False, force_update=False): > > if self.id: > > # this is an update rather than a new instance > > old = Foo.objects.get(pk=self.id) > > # DO STUFF > > super(Foo, self).save(force_insert, force_update) > > Oh, so I'm actually able to get the old value of the field after all: > > def save(self, force_insert=False, force_update=False): > if self.id: > # this is an update rather than a new instance > old = Foo.objects.get(pk=self.id) > > old_field = old.field_that_i_want > new_field = self.field_that_i_want > > # Do something with old_field and new_field > > super(Foo, self).save(force_insert, force_update) > > Thanks. :) > > Would this also work in pre_save or post_save signals, or only in the > model's save method? --~--~---------~--~----~------------~-------~--~----~ 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 django-users+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
