Fields on some but not all subclasses

[andybak]

I was hoping this was possible:

class Animal(TypedModel):
    name = models.CharField(max_length=100)

class Cat(Animal):
    meow_volume = models.IntegerField()
    owner_name = models.CharField(max_length=100)

class Dog(Animal):
    bark_volume = models.IntegerField()
    owner_name = models.CharField(max_length=100)

class Bear(Animal):
    growl_volume = models.IntegerField()

But I get:

django.db.utils.ProgrammingError: column "owner_name" specified more than once

I know I could move 'owner_name' on to the base class but then Bears have an owner - which they shouldn't have.

Is there any way that the duplicate fields could be magically recognised and de-dupped? Obviously they would have to be identical - that would be a reasonable constraint to impose on this kind of arrangement.

[saltysealion]

Any news on this? I am having the same issue.

[craigds]

I think I probably missed this at the time. It actually looks like a dupe of #8, so I'll close this and update there