django_ajax_response.py

try:
    import json
except ImportError:
    from django.utils import simplejson as json

from django.http import HttpResponse
from django.conf import settings
from django.core.serializers.json import DjangoJSONEncoder

JSONContentType = 'application/json; charset=%s' % (settings.DEFAULT_CHARSET, )


class JSONResponse(HttpResponse):
    """
    Response that will return JSON serialized value of the content

    """
    INDENT = 1 if settings.DEBUG else None

    def __init__(self, content, content_type=JSONContentType, *args, **kwargs):
        json_content = json.dumps(content, cls=DjangoJSONEncoder, indent=self.INDENT)
        super(JSONResponse, self).__init__(json_content, content_type)


def render_json(request, data, content_type=JSONContentType, *args, **kwargs):
    """
    View shortcut around JSONResponse that will set the content_type
    to text/plain if browser (like IE 8) does not support application/json

    """
    if 'application/json' in content_type:
        if 'application/json' not in request.META['HTTP_ACCEPT']:
            content_type = "text/plain; charset=%s" % (settings.DEFAULT_CHARSET, )
    return JSONResponse(data, content_type, *args, **kwargs)