Adding attributes into Django Model's Meta class

Question

I'm writing a mixin which will allow my Models to be easily translated into a deep dict of values (kind of like .values(), but traversing relationships). The cleanest place to do the definitions of these seems to be in the models themselves, a la:

class Person(models.Model, DeepValues):     name = models.CharField(blank=True, max_length=100)     tribe = models.ForeignKey('Tribes')      class Meta:         schema = {             'name' : str,             'tribe' : {                 'name' : str             }         }  Person.objects.all().deep_values() => {     'name' : 'Andrey Fedorov',     'tribe' : {         'name' : 'Mohicans'     } } 

However, Django complains about my including this in class Meta with:

TypeError: 'class Meta' got invalid attribute(s): schema 

(entire stack trace here)

Now, I suppose I could elaborately override this in my mixin, but is there a more elegant way of storing this information?

Answer 1

I don't know about elegant, but one pragmatic way is:

import django.db.models.options as options  options.DEFAULT_NAMES = options.DEFAULT_NAMES + ('schema',) 

Obviously, this would break if Django ever added a 'schema' attribute of its own. But hey, it's a thought...you could always pick an attribute name which is less likely to clash.