Find object in child class from object in parent class in django

Question

Let\'s say I have a parent class (ThingsThatMigrate) and two children (Coconut and Swallow). Now let\'s say I have a ThingsThatMigrate object. How can I determine if it is

Answer 1

As DrMeer suggested, I highly recommend django-model-utils (hosted on bitbucket now though). I'm not sure it's convincing enough though.
Let a code example prove it:

>>> ThingsThatMigrate.objects.all().select_subclasses()
Coconut, Coconut, Swallow, Coconut, ThingsThatMigrate

It takes one line, objects = InheritanceManager() in your parent model.