#10075: model inheritance with foreign key problem
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Reporter: [email protected] | Owner: nobody
Status: new | Milestone:
Component: Forms | Version: 1.0
Keywords: model inheritance foreign key | Stage: Unreviewed
Has_patch: 0 |
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I have these three models:
class Address(models.Model):
name = models.CharField(max_length=100)
## many other fields ##
class Meta:
ordering = ('name',)
def __unicode__(self):
return self.name
class Organization(models.Model):
name = models.CharField(max_length=100)
## many other fields ##
class Meta:
ordering = ('name',)
def __unicode__(self):
return self.name
class OrganizationAddress(Address):
organization = models.ForeignKey (
Organization,
related_name = "addresses",
)
When i try to add/edit an organization and add one address i've got this
error:
" ValueError: Cannot assign None: "OrganizationAddress.address_ptr"
does not allow null values. "
I've tried to understand the problem (because it happened since one day to
another..) and i've found that the problem was born after the django
commit of the changeset 9664.
This is the "incriminated code" of changeset:
488 if fk_attname == self._pk_field.attname:
489 exclude = [self._pk_field.name]
490 else:
491 exclude = []
I have "organization_id" in the fk_attname e "address_ptr" in the
self._pk_field.attname and so the primary_key wasn't insert in the exclude
list.
Below a code portion to test the problem.
"""
from django.forms.models import inlineformset_factory
from my_apps.models import Organization, Address, OrganizationAddress
Organization(name='test').save()
org = Organization.objects.get(name='test')
inline_formset = inlineformset_factory(Organization, OrganizationAddress,
can_delete=False, extra=2)
data = {
'addresses-TOTAL_FORMS': '2', # the number of forms rendered
'addresses-INITIAL_FORMS': '0', # the number of forms with initial data
'addresses-0-name': 'Test test',
}
formset = inline_formset(data, instance=org)
formset.is_valid()
formset.save()
"""
Sorry for my english.
Marco M.
--
Ticket URL: <http://code.djangoproject.com/ticket/10075>
Django <http://code.djangoproject.com/>
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