Hi Rodrigue, thats exactly what i tried as a first, but unfortunately something like this doesn't work. And seems there isn't any "standard" workaround for this.
Solutions are: 1.) call raw sql for creating record in B table, 2.) copy all local_fields values from a to b, after this save works.. I just thought there is something else, and if not, something like this will be nice to have in django... Thanks Rodrique. On Jul 21, 2:59 pm, Rodrigue <rodriguealca...@gmail.com> wrote: > If you look herehttp://docs.djangoproject.com/en/dev/topics/db/models/#id7 > you'll see that multi-table inheritance is handled at the db level > "via an automatically-created OneToOneField". This means that an > instance of B has a foreign key to an instance of A. > > At the model level, there should be an a_ptr and an a_ptr_id > attributes (check with a dir(b) for example). The first one is the > instance of A associated with b, and the second the id of that > instance of A. So, I imagine that: > b = B() > b.a_ptr = a > b.save() > > or > > b = B() > b.a_ptr_id = a_id > b.save() > > should do what you want. > > Rodrigue > On Jul 20, 4:03 pm, Peter Cicman <pcic...@gmail.com> wrote: > > > > > Hi, i didn't found noting about it in docs, so i'll try to ask, first > > explanation, i have: > > > class A(models.Model): > > name = models.CharFiled(...., required=True) > > ..... > > > class B(A): > > .... > > > I have an existing instance of A, say `a` > > > and i "want to make" instance of b out of it. > > > i'm looking for something like: > > b = B() > > b.origin = a > > b.save() > > > Is this somehow possible? > > > Thanks a lot! --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
