class Meta:
     unique_together = ( ('name', 'active'),)

class BaseModel(models.Model):
    # all of your fields here
    active = models.BooleanField()


class ActiveModel(BaseModel):
    class Meta:
        unique_together = ('whatever', 'fields')

    def make_inactive(self):
        # create a new instance of InactiveModel based on
        # this instances's values, then delete this instance


class InactiveModel(BaseModel):
    def make_active(self):
        # create a new instance of InactiveModel based on
        # this instances's values, then delete this instance