Ramiro - you made my day. Somehow I missed this little tid bit in the docs - what a super handy feature!! thank you.
On Nov 20, 4:36 pm, Ramiro Morales <cra...@gmail.com> wrote: > On Sat, Nov 20, 2010 at 7:59 AM, marco.ferrag...@gmail.com > > > > <marco.ferrag...@gmail.com> wrote: > > Hi all! I'm new to django and I'm experimenting with models but I have > > some trouble. I've minimized my problem to this code: > > > class TestBase(models.Model): > > base = models.CharField(max_length=255) > > > from django.contrib import admin > > class TestA(TestBase): > > testb = models.CharField(max_length=255) > > > admin.site.register(TestA) > > > class TestB(TestBase): > > testc = models.CharField(max_length=255) > > > admin.site.register(TestB) > > > Trying to add TestA instances from admin interface I have this error: > > Cannot assign "''": "TestA.testb" must be a "TestB" instance. > > > why testb should be a TestB instance?? It's a simple field! > > I suspect this is because of something that is described in the MTI docs: > > http://docs.djangoproject.com/en/1.2/topics/db/models/#multi-table-in... > > Translated to you example the relevant paragraph says: > > "If you have a TestBase that is also a TestB, you can get from the TestBase > object to the TestB object by using the lower-case version of the model name: > > >>> p = TestBase.objects.get(id=12) > > # If p is a TestB object, this will give the child class:>>> p.testb > > <TestB: ...> > > " > > The TestA model is inheriting that 'testb' accesor from TestBase to TestB > and it is clashing with the identically named field. > > -- > Ramiro Morales -- 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.
