Generic Django JSON view class with JSONP support

gistfile1.py

try:
    import simplejson as json
except ImportError:
    import json

from django.views import generic
from django.http import HttpResponse

class JsonView(generic.View):
    """
    Generic view for returning JSON data. 
    Supports JSONP through the query variable `callback` (used by jQuery)
    
    Usage:
      Override get_json_data to return the data that is to be encoded
    or:
      JsonView.as_view(json_data={"foo": "bar"})
    """
    json_data = {}
    
    def get_json_data(self, request, *args, **kwargs):
        """
        Should return the data that is to be JSON encoded and sent to the client
        """
        return self.json_data
    
    def get(self, request, *args, **kwargs):
        data = self.get_json_data(request, *args, **kwargs)
        jsonp_callback = request.GET.get("callback")
        if jsonp_callback:
            response = HttpResponse("%s(%s);" % (jsonp_callback, json.dumps(data)))
            response["Content-type"] = "text/javascript; charset=utf-8"
        else:
            response = HttpResponse(json.dumps(data))
            response["Content-type"] = "application/json; charset=utf-8"
        return response