A more compact version of FbxEncoder for DjangoRestFramework.

drf_encoder2.py

from rest_framework import renderers
from rest_framework.utils.encoders import JSONEncoder
from bson import ObjectId

class FbxJSONEncoder(JSONEncoder):
    """
    FbxJSONEncoder subclass that knows how to encode date/time/timedelta,
    decimal types, generators and Mongo ObjectId.
    """
    def default(self, o):
        if isinstance(o, ObjectId):
            return str(o)
        return JSONEncoder.default(self, o)

class FbxRenderer(renderers.JSONRenderer):
    encoder_class = FbxJSONEncoder