无法在django-piston中更新（PUT）和删除（delete）数据

Question

我刚刚跟着这个教程做，例子做得很好。http://weblog.mattdorn.com/content/restful-web-apps-with-django-piston-and-ext-js/

但是当我自己创建的时候，添加功能是可以的，但删除和更新功能就不行了。以下是我运行服务器时的控制台信息：

[16/Nov/2011 00:11:17] "DELETE /api/phonebooks/10 HTTP/1.1" 301 0
[16/Nov/2011 00:11:17] "GET /api/phonebooks/10/ HTTP/1.1" 200 255
[16/Nov/2011 00:11:23] "PUT /api/phonebooks/12 HTTP/1.1" 301 0
[16/Nov/2011 00:11:23] "GET /api/phonebooks/12/ HTTP/1.1" 200 253

我觉得它确实在删除和更新数据，但之后又重新调用数据，所以看起来没有任何变化。而且当我调试我的handlers.py时，它根本进不了更新的方法。

#handlers.py
from django.utils import simplejson

from piston.handler import BaseHandler
from piston.utils import rc, require_mime, require_extended, validate

from phonebook.phoneapp.models import Phonebook
from phonebook.phoneapp.forms import PhonebookForm

class PhonebookHandler(BaseHandler):
    allowed_methods = ('GET', 'DELETE', 'POST', 'PUT')
    fields = ('id','fullname','address','age','gender','phonenumber','user')
    model = Phonebook

    def create(self, request, *args, **kwargs):
        if not self.has_model():
            return rc.NOT_IMPLEMENTED

        attrs = self.flatten_dict(request.POST)
        if attrs.has_key('data'):
            ext_posted_data = simplejson.loads(request.POST.get('data'))
            attrs = self.flatten_dict(ext_posted_data)

        try:
            inst = self.model.objects.get(**attrs)
            return rc.DUPLICATE_ENTRY
        except self.model.DoesNotExist:
            inst = self.model(**attrs)
            inst.save()
            return inst
        except self.model.MultipleObjectsReturned:
            return rc.DUPLICATE_ENTRY

    def update(self, request, id):
        if not self.has_model():
            return rc.NOT_IMPLEMENTED

        attrs = self.flatten_dict(request.POST)
        if attrs.has_key('data'):
            ext_posted_data = simplejson.loads(request.POST.get('data'))
            attrs = self.flatten_dict(ext_posted_data)        

        inst = self.model.objects.get(id=id)
        inst.fullname = attrs['fullname'] 
        inst.address = attrs['address']
        inst.gender = attrs['gender']
        inst.age = attrs['age']
        inst.phonebook = attrs['phonebook']
        inst.save()

        return inst

我也尝试过去掉allowed_methods，但也没有任何效果。

有没有人能给我一些关于我这种情况的建议？谢谢大家！

django web development debugging http methods RESTful API data update data deletion piston framework

无法在django-piston中更新（PUT）和删除（delete）数据

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