mongokit uuid support

mongokit_uuid

# result of running mongokit_uuid.py with "default_values = { 'my_uuid' : uuid.uuid4 }"
> python mongokit_uuid.py
Traceback (most recent call last):
  File "mongokit_uuid.py", line 22, in <module>
    myid.save()
  File "/Library/Python/2.6/site-packages/mongokit/document.py", line 398, in save
    self.validate(auto_migrate=False)
  File "/Library/Python/2.6/site-packages/mongokit/document.py", line 247, in validate
    super(Document, self).validate()
  File "/Library/Python/2.6/site-packages/mongokit/schema_document.py", line 348, in validate
    self._validate_doc(self, self.structure)
  File "/Library/Python/2.6/site-packages/mongokit/schema_document.py", line 585, in _validate_doc
    self._validate_doc(doc[key], struct[key],  new_path)
  File "/Library/Python/2.6/site-packages/mongokit/schema_document.py", line 537, in _validate_doc
    path, struct.__name__, type(doc).__name__))
  File "/Library/Python/2.6/site-packages/mongokit/schema_document.py", line 519, in _raise_exception
    raise exception(message)
mongokit.schema_document.SchemaTypeError: my_uuid must be an instance of Binary not UUID

mongokit_uuid.py

import uuid

import mongokit
import pymongo
from pymongo.binary import Binary, UUID_SUBTYPE

class HasUuid(mongokit.Document):
    __database__ = 'test'
    __collection__ = 'uuids'
    structure = { 'my_uuid' : Binary }
    # default_values = { 'my_uuid' : uuid.uuid4 }
    default_values = { 'my_uuid' : lambda : Binary(str(uuid.uuid4()), UUID_SUBTYPE) }

    authorized_types = mongokit.Document.authorized_types + [uuid.UUID]
    #skip_validation = True

if __name__ == '__main__':
    c = mongokit.Connection()
    c.register([HasUuid])

    myid = c.test.HasUuid()
    myid.save()
    print myid
    mysecondid = c.test.HasUuid()
    print mysecondid
    mysecondid.save()

    for i in c.test.ids.find():
        print i

    # runs with 'my_uuid' : lambda : Binary(str(uuid.uuid4()), UUID_SUBTYPE) prints
    # {'my_uuid': Binary('aef72f5c-0f6f-4c77-93be-13601966606f', 3), '_id': ObjectId('4dafa2199f8356069e000000')}
    # {'my_uuid': Binary('fe22b1e2-9bb4-4fe1-9b5e-3d116f825b34', 3)}

    # > db.uuids.find();
    # { "_id" : ObjectId("4dafa2199f8356069e000000"), "my_uuid" : BinData(3,"YWVmNzJmNWMtMGY2Zi00Yzc3LTkzYmUtMTM2MDE5NjY2MDZm") }
    # { "_id" : ObjectId("4dafa2199f8356069e000001"), "my_uuid" : BinData(3,"ZmUyMmIxZTItOWJiNC00ZmUxLTliNWUtM2QxMTZmODI1YjM0") }