ошибка обработчиков в django-piston

Question

Я получил эту ошибку в моем проекте django, когда я реализую другие обработчики для своего джанго-поршня.

Request Method: GET 
Request URL: http://127.0.0.1:8000/api/getdata/ 

Django Version: 1.3.1 
Python Version: 2.7.1 
Installed Applications: 
['admin_tools.theming', 
'admin_tools.menu', 
'admin_tools.dashboard', 
'django.contrib.auth', 
'django.contrib.contenttypes', 
'django.contrib.sessions', 
'django.contrib.sites', 
'django.contrib.messages', 
'django.contrib.staticfiles', 
'django.contrib.admin', 
'app', 
'api', 
'south'] 
Installed Middleware: 
('django.middleware.common.CommonMiddleware', 
'django.contrib.sessions.middleware.SessionMiddleware', 
'django.middleware.csrf.CsrfViewMiddleware', 
'django.contrib.auth.middleware.AuthenticationMiddleware', 
'django.contrib.messages.middleware.MessageMiddleware', 
'django.middleware.csrf.CsrfResponseMiddleware') 


Traceback: 
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response 
    101.        request.path_info) 
File "/usr/local/lib/python2.7/dist-packages/django/core/urlresolvers.py" in resolve 
    252.      sub_match = pattern.resolve(new_path) 
File "/usr/local/lib/python2.7/dist-packages/django/core/urlresolvers.py" in resolve 
    250.    for pattern in self.url_patterns: 
File "/usr/local/lib/python2.7/dist-packages/django/core/urlresolvers.py" in _get_url_patterns 
    279.   patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module) 
File "/usr/local/lib/python2.7/dist-packages/django/core/urlresolvers.py" in _get_urlconf_module 
    274.    self._urlconf_module = import_module(self.urlconf_name) 
File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py" in import_module 
    35.  __import__(name) 
File "/home/agileone/workspace/proj/api/urls.py" in <module> 
    15. devdata_handler = Resource(DevDataHandler) 
File "/usr/local/lib/python2.7/dist-packages/django_piston-0.3dev-py2.7.egg/piston/resource.py" in __init__ 
    36.   self.handler = handler() 

Exception Type: TypeError at /api/getdata/ 
Exception Value: DevDataHandler() takes exactly 1 argument (0 given) 

Я не знаю, в чем причина, почему я получил их.

это мой api/urls.py

from django.conf.urls.defaults import * 
from piston.resource import Resource 
from api.handlers import * 

from django.http import HttpResponse 
from piston.handler import BaseHandler, AnonymousBaseHandler 


class CsrfExemptResource(Resource): 
    def __init__(self, handler, authentication=None): 
     super(CsrfExemptResource,self).__init__(handler,authentication) 
     self.csrf_exempt=getattr(self.handler,'csrf_exempt',True) 

data_handler = CsrfExemptResource(DataHandler) 
devdata_handler = Resource(DevDataHandler) 
urlpatterns=patterns('', 
    url(r'^getdata/$', data_handler, {'emitter_format': 'ext-json'}), 
    url(r'^getdevdata/$', devdata_handler, {'emitter_format': 'ext-json'}) 
) 

и это мой api/handlers.py

from django.utils import simplejson 
from piston.handler import BaseHandler, AnonymousBaseHandler 
from app.models import * 
from django.db.models import * 
from piston.utils import rc, require_mime, require_extended, validate 
import datetime 

class DataHandler(BaseHandler): 
    allowed_method = ('GET', 'POST', 'PUT', 'DELETE') 
    fields = ('title') 
    model = Data 

    def read(self, request): 
     data = {"msg":"Hello world"} 
     return data   

def DevDataHandler(BaseHandler): 
    allowed_method = ('GET', 'POST', 'PUT', 'DELETE') 
    fields = ('title') 
    model = Data 

    def read(self, request): 
     data = {"msg":"Hi world"} 
     return data 

это работает, если я не включил devdata_handler = Resource(DevDataHandler), но я на самом деле нужно ...

сделать любой может помочь мне решить мое дело?

заблаговременно

Answer 1

Обработчики - это классы, а не функции. Изменение:

def DevDataHandler(BaseHandler): 

к:

class DevDataHandler(BaseHandler):