multi-table-inheritance

In Django, if you have models that use multi-table inheritance, and you define a receiver for a post_save signal on the parent class, does that receiver function get called when an instance of the child class is saved? Borrowing an example from another question : class Animal(models.Model): category = models.CharField(max_length=20) class Dog(Animal): color = models.CharField(max_length=10) def echo_category(sender, **kwargs): print "category: '%s'" % kwargs['instance'].category post_save.connect(echo_category, sender=Animal) If I do: >>> dog = Dog.objects.get(...) >>> dog.category = "canine"

Many experienced developers recommend against using Django multi-table inheritance because of its poor performance: Django gotcha: concrete inheritance by Jacob Kaplan-Moss , a core contributor of Django. In nearly every case, abstract inheritance is a better approach for the long term. I’ve seen more than few sites crushed under the load introduced by concrete inheritance, so I’d strongly suggest that Django users approach any use of concrete inheritance with a large dose of skepticism. Two Scoops of Django by Daniel Greenfield ( @pydanny ) Multi-table inheritance, sometimes called “concrete