py: tastypie-pretty-json-serializer

PrettyJSONSerializer.py

class PrettyJSONSerializer(Serializer):
    json_indent = 2

    def to_json(self, data, options=None):
        options = options or {}
        data = self.to_simple(data, options)
        return simplejson.dumps(data, cls=json.DjangoJSONEncoder,
                sort_keys=True, ensure_ascii=False, indent=self.json_indent)

Update for Django 1.5+ (see release notes)

Django 1.5 deprecates django.utils.simplejson in favor of Python 2.6’s built-in json module.

class PrettyJSONSerializer(Serializer):
    json_indent = 4

    def to_json(self, data, options=None):
        options = options or {}
        data = self.to_simple(data, options)
        return json.dumps(data, sort_keys=True, ensure_ascii=False, indent=self.json_indent)

Then you just have to wire it to the resource:

class SomeResource(ModelResource):
    class Meta:
        queryset = SomeModel.objects.all()
        serializer = PrettyJSONSerializer()