Polymorphism with MongoKit

In the following example, we have to object A and B wich herite from Root. And we want to build an object C from A and B. Let’s build Root, A and B first :

>>> from mongokit import *
>>> class Root(Document):
...     structure = {
...         "root":int,
...     }
...     required_fields = ['root']

>>> class A(Root):
...     structure = {
...         "a_field":unicode,
...     }
...     required_fields = ['a_field']
...

>>> class B(Root):
...     structure = {
...         "b_field":unicode,
...     }
...

Polymorphisme just work as expected:

>>> class C(A,B):
...     structure = {"c_field":float}

>>> c = C()
>>> c == {'b_field': None, 'root': None, 'c_field': None, 'a_field': None}
True
>>> C.required_fields
['root', 'a_field']