Hi, Maybe g() should return the id instead of the instance? That does seem a bit odd that it wouldn't accept an A() instance as the default.
Collin On Wednesday, March 11, 2015 at 7:43:35 AM UTC-4, Krzysztof Ciebiera wrote: > > I have created a model A: > > def g(): > return A.objects.get(pk=1) > > class A(models.Model): > a = models.IntegerField() > > ./manage.py makemigrations > ./manage.py migrate > > then I've added some data: > > a = A(a=1) > a.save() > > then I have created another model with a ForeignKey field with a default > set to g function (that really returns one instance od A) and I was trying > to migrate it: > > class B(models.Model): > b = models.ForeignKey(A, default=g) > > ./manage.py makemigrations > ... > ./manage.py migrate > .... > File > ".../e/local/lib/python2.7/site-packages/django/db/models/fields/__init__.py", > > line 627, in get_db_prep_save > prepared=False) > File > ".../e/local/lib/python2.7/site-packages/django/db/models/fields/__init__.py", > > line 907, in get_db_prep_value > value = self.get_prep_value(value) > File > ".../p/e/local/lib/python2.7/site-packages/django/db/models/fields/__init__.py", > > line 915, in get_prep_value > return int(value) > TypeError: int() argument must be a string or a number, not 'A' > > Is it expected behaviour or a bug? > -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To post to this group, send email to django-users@googlegroups.com. Visit this group at http://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/877cc6a3-1b37-4b88-918b-a0f955f59c8c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
