Can't resolve dependencies error in dumpdata.

[wyleu]

Sub classing a self referring class with natural keys from a Base class generates an error on dumpdata.

c:\dev\chris\bugdemo>manage.py syncdb

Creating tables ...

Creating table auth_permission

Creating table auth_group_permissions

Creating table auth_group

Creating table auth_user_user_permissions

Creating table auth_user_groups

Creating table auth_user

Creating table django_content_type

Creating table django_session

Creating table django_site

Creating table bug_template_extends

Creating table bug_template_includes

Creating table bug_template

You just installed Django's auth system, which means you don't have any superusers defined.

Would you like to create one now? (yes/no): no

Installing custom SQL ...

Installing indexes ...

Installed 0 object(s) from 0 fixture(s)

c:\dev\chris\bugdemo>manage.py dumpdata

Error: Can't resolve dependencies for bug.Template in serialized app list.

Here's the model.

from django.db import models

class BaseManager(models.Manager):

    def get_by_natural_key(self, name, date_created):

        return self.get( name=name, date_created=date_created,)

class Base(models.Model):

    objects = BaseManager()

    

    date_created   = models.DateTimeField(auto_now_add = True )

    date_modified  = models.DateTimeField(auto_now = True )    

    name           = models.CharField(max_length = 100, default = '.')

    description    = models.TextField(default = '.')

    

    class Meta:

        abstract = True

        unique_together = (('name','date_created'),)

        ordering = ['name','date_created']

        

    def natural_key(self):

        return (self.name, self.date_created)

        

    def __unicode__(self):

        return self.name

TEMPLATE_TYPES = (

    ('HTML', 'HTML Text Template'),

    ('XML', 'XML Template'),

    ('TXT',  'Text Template'),

    )

    

class Template(Base):

    extends   = models.ManyToManyField('self', blank = True, null =True, related_name = 'extends_template', symmetrical = False)

    includes   = models.ManyToManyField('self', blank = True, null =True, related_name = 'includes_template', symmetrical = False)

    type       = models.CharField(max_length = 6, choices=TEMPLATE_TYPES)

Chris