Question

I have the following setting:
class Baguette(models.Model):
# fields

class Pizza(models.Model):
    # fields

class Topping(models.Model):
    # fields

    @classmethod
    def do_something(cls):
        # stuff

    class Meta:
        abstract = True

class PizzaTopping(models.Model):
    obj = models.ForeignKey(Pizza, related_name='topping_set')

class BaguetteTopping(models.Model):
    obj = models.ForeignKey(Baguette, related_name='topping_set')

I know, the way the relations are made is not perfect, but this is now the way it is.

My question is: Can I access do_something in a dynamic way via RelatedManager without knowing if there is PizzaTopping or BaguetteTopping behind it?

I have an instance obj of Pizza or Baguette (at this point I don’t know if it is Pizza or Baguette). Now I want to call something like this:

obj.topping_set.__modelclass__.do_something()

Is there a way to do this without testing the class of obj ?

Answer 1

obj.topping_set.model will be your model class. So obj.topping_set.model.do_something().