JSON CBV From https://github.com/clutchio/clutch/blob/master/django_ext/http.py

gistfile1.txt

# Copyright 2012 Twitter
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import re
import simplejson

from django.http import HttpResponse
from django.conf import settings


class JSONResponse(HttpResponse):
    def __init__(self, request, data):
        indent = 2 if settings.DEBUG else None
        mime = 'text/javascript' if settings.DEBUG else 'application/json'
        content = simplejson.dumps(data, indent=indent)
        callback = request.GET.get('callback')
        if callback:
            # Verify that the callback is secure
            if re.compile(r'^[a-zA-Z][\w.]*$').match(callback):
                content = '%s(%s);' % (callback, content)
        super(JSONResponse, self).__init__(content=content, mimetype=mime)