Django 1.2: How to connect pre_save signal to class method

Question

I am trying to define a \"before_save\" method in certain classes in my django 1.2 project. I\'m having trouble connecting the signal to the class method in models.py.

Answer 1

A working example with classmethod:

class MyClass(models.Model):
    #....
    @classmethod
    def before_save(cls, sender, instance, *args, **kwargs):
        instance.test_field = "It worked"

pre_save.connect(MyClass.before_save, sender=MyClass)

There's also a great decorator to handle signal connections automatically: http://djangosnippets.org/snippets/2124/