unthingable

AbstractBase(models.Model):
    foo = somefield

class Base(AbstractBase):
    c1 = models.OneToOneField('C1', null=True, blank=True)
    c2 = models.OneToOneField('C2', null=True, blank=True)
 
    def c(self):
       #only one additional query to get the base
        if self.c1_id: