full_validation fails upon validating an inherited model

Hallo,

I have a problem running Django's full_validation-method upon an
instance of an inherited model. Please consider the following two models:

class ParentModel(models.Model):

parent_model_id = models.IntegerField(primary_key=True)
parent_model_attr = models.CharField(max_length=200)


class ChildModel(ParentModel):

child_model_attr = models.CharField(max_length=200)

Creating a ChildModel by using the keyword pk instead of the primary
key's real attribute name and running full_validation on it before
saving (after saving this method does not make much sense, I think)
leads to an error as shown below:

>>> from mytest.models import ChildModel

>>> cm = ChildModel(pk=1,child_model_attr='some
text',parent_model_attr='Some other text')

>>> cm.full_clean()
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "/usr/lib/python2.7/dist-packages/django/db/models/base.py",
line 824, in full_clean
raise ValidationError(errors)
ValidationError: {'parent_model_id': [u'This field cannot be null.']}


Using the primary key's real attribute name works of course (but cannot
be done in my scenario).

Any ideas how to make using the pk-keyword work without that validation
error?

Thanks in advance for any hint.


With best regards

Carsten Reimer


--
Carsten Reimer
Web Developer
carsten.reimer@galileo-press.de
Phone +49.228.42150.73

Galileo Press GmbH
Rheinwerkallee 4 - 53227 Bonn - Germany
Phone +49.228.42150.0 (Zentrale) .77 (Fax)
http://www.galileo-press.de/

Managing Directors: Tomas Wehren, Ralf Kaulisch, Rainer Kaltenecker
HRB 8363 Amtsgericht Bonn

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