dumpdata do not play friendly with inheritance

[redalastor@…]

Let say I have the following classes:

class Person(models.Model):
    first_name = models.CharField(max_length = 50)
    last_name = models.CharField(max_length = 50)

    def full_name(self):
        return "%s %s" % (self.first_name, self.last_name)

class Pirate(Person):
    pastafarian = models.BooleanField(default = True)

Now I create a Pirate:

>>> p = Pirate()
>>> p.first_name = "Jack"
>>> p.last_name = "Sparrow"
>>> p.pastafarian = False
>>> p.save()
>>> p
<Pirate: Jack Sparrow>
>>> Person.objects.all()
[<Person: Jack Sparrow>]
>>> Pirate.objects.all()
[<Pirate: Jack Sparrow>]

So far so good. Lets get to the buggy part:

$ ./manage.py dumpdata > yarrrr.json
$ ./manage.py reset pirates
$ ./manage.py loaddata yarrrr.json
$ ./manage.py shell
>>> from myproject.pirates.models import *
>>> Person.objects.all()
[<Person: Jack Sparrow>, <Person: Jack Sparrow>]

A workaround for now is to manually edit the serialized file and remove all references to the base class (Person in this case). Import will then work as expected.

[Russell Keith-Magee]

You don't give an SVN revision that you were using, but the behavior you are reporting is consistent with pre-[7600], when this bug was fixed. If you are still seeing this behaviour with [7600] or newer, please reopen.