utils.py

class BaseView(object):
    """
    BaseView provides a class that is instantiated and then
    called like a function.

    __init__ called without arguments.
    You just (must) override the __call__ method.
    """
    def __new__(cls, *args, **kwargs):
        obj = super(BaseView, cls).__new__(cls)
        return obj(*args, **kwargs)
    
    def __call__(self, *args, **kwargs):
        pass

from django.http import HttpResponse
class REST(BaseView):
    """
    A class to handle CRUD boilerplate for Backbone.js requests.

    Override methods as needed, be sure to set the model class in the child class.
    """
    def __call__(self, request, *args, **kwargs):
        func = getattr(self, request.method.lower(), "get")
        if kwargs.get("id", None):
            self.object_id = int(kwargs.get("id", None))
        else:
            self.object_id = None
        return func(request, *args, **kwargs)

    model_class = None #Override in child classes.

    # HTTP methods www.w3.org/Protocols/rfc2616/rfc2616-sec9.html
    def get(self, request, *args, **kwargs):
        if self.object_id:
            data = self.model_class.objects.get(pk=self.object_id) 
        else:
            data = self.model_class.objects.all()
        return HttpResponse(to_json(data), content_type="application/json")

    def post(self, request, *args, **kwargs):
        data = parse_json(request.body)
        obj = self.model_class(**data)
        obj.save()
        return HttpResponse(to_json(obj), content_type="application/json")

    def put(self, request, *args, **kwargs):
        data = parse_json(request.body)
        obj = self.model_class.objects.get(pk=self.object_id)
        for field in data.keys():
            setattr(obj, field, data[field])
        obj.save()
        return HttpResponse(to_json(obj), content_type="application/json")
    
    def delete(self, request, *args, **kwargs):
        obj = self.model_class.objects.get(pk=self.object_id)
        obj.delete()
        return HttpResponse("", content_type="application/json")

    def head(self, request, *args, **kwargs):
        return self.get(request, *args, **kwargs)
    
    def options(self, request, *args, **kwargs):
        raise NotImplementedError

    def trace(self, request, *args, **kwargs):
        raise NotImplementedError
    
    def connect(self, request, *args, **kwargs):
        raise NotImplementedError