I have the following model class:
class ItemInstance(models.Model):
    TITLE = 0
    COLLECTION = 1
    TVSERIES = 2
This allows me to do:
item = ItemInstance.objects.all()[0]
item.TITLE ==> 0
But not this:
cls = ItemInstance
cls.TITLE ==> error
How would I enable these vars to be available for a @classmethod? 
