Thanks Ian, I'll give that a go later. I don't suppose it matters what order they are called in because it's only clearing references to do with the model instance it's calling from.
On Apr 13, 2:15 am, Ian Lewis <ianmle...@gmail.com> wrote: > Tom, > > You could try doing this clear logic in a pre_delete signal. You might have > to test out the timing of when the signals get called but it should call > pre_delete for all deleted models. In this case it would call pre_delete on > model2 before model1 but you should be able to get what you are looking for. > > http://docs.djangoproject.com/en/dev/ref/signals/#pre-delete > > > > > > On Tue, Apr 13, 2010 at 8:21 AM, cootetom <coote...@gmail.com> wrote: > > Hi, I'm trying to figure out the way django deletes models so that I > > can clear the correct references that I need to prior to deleting. So > > I have models set up with overrided delete functions so that I can do > > clears before the actual delete. However, it appears the delete > > functions in a model don't get called in the cascade of deletes so not > > each child model gets to do it's clear of linked data before > > deleting. > > > def model1(models.Model): > > def delete(self): > > self.related_model.clear() > > super(model1, self).delete() > > > def model2(models.Model): > > model2 = models.ForeignKey(model2) > > > def delete(self): > > self.another_related_model.clear() > > super(model2, self).delete() > > > So if I do model1.delete() then it will do it's clear but it appears > > it won't do the clear from model2? Am I getting this behaviour right > > or am I doing something wrong here? > > > The model class seems like the best place to put delete logic in so > > that when it's deleted it clears any data it needs to first. > > > - Tom > > > -- > > You received this message because you are subscribed to the Google Groups > > "Django users" group. > > To post to this group, send email to django-us...@googlegroups.com. > > To unsubscribe from this group, send email to > > django-users+unsubscr...@googlegroups.com<django-users%2bunsubscr...@google > > groups.com> > > . > > For more options, visit this group at > >http://groups.google.com/group/django-users?hl=en. > > -- > ======================================= > 株式会社ビープラウド イアン・ルイス > 〒150-0021 > 東京都渋谷区恵比寿西2-3-2 NSビル6階 > email: ianmle...@beproud.jp > TEL:03-6416-9836 > FAX:03-6416-9837http://www.beproud.jp/ > ======================================= -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@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.
