tutorial中文 - python django範例




在使用Django休息框架教程時,TypeError (4)

我是使用Django Rest框架的新手,我正在學習本教程Django-Rest-Framework

代替片段,我的模型由一個userprofile組成,如下所示:

class UserProfile(models.Model):
      user = models.OneToOneField(User)
      emp_code = models.CharField(max_length=10, blank=True)
      user_type = models.IntegerField(max_length=1, default=0, choices=USER_TYPE)
      group = models.ForeignKey(Group, null=True, blank=True)
      status = models.SmallIntegerField(max_length=1,default=0)
      added_on = models.DateTimeField(auto_now_add=True)

教程的第一部分運行良好,得到所需的JSON格式的輸出提到,但第二個教程向上我得到類型錯誤:

TypeError at /authentication/userprofile/
'type' object is not iterable
Request Method: GET
Request URL:    http://*****.com/authentication/userprofile/
Django Version: 1.6
Exception Type: TypeError
Exception Value:    
'type' object is not iterable
Exception Location: /home/web/cptm_venv/lib/python2.7/site-     packages/rest_framework/views.py in get_permissions, line 226
Python Executable:  /usr/bin/python
Python Version: 2.7.3
Python Path:    
['/home/web/cptm_venv/lib/python2.7/site-packages',
 '/home/web/cptm',
 '/home/web/cptm_venv/lib/python2.7/site-packages',
 '/usr/lib/python2.7',
 '/usr/lib/python2.7/plat-linux2',
 '/usr/lib/python2.7/lib-tk',
 '/usr/lib/python2.7/lib-old',
 '/usr/lib/python2.7/lib-dynload',
 '/usr/local/lib/python2.7/dist-packages',
 '/usr/lib/python2.7/dist-packages',
 '/usr/lib/pymodules/python2.7']
 Server time:   Wed, 11 Dec 2013 17:33:54 +0530
 Traceback Switch to copy-and-paste view

/home/web/cptm_venv/lib/python2.7/site-packages/django/core/handlers/base.py in get_response
                response = wrapped_callback(request, *callback_args, **callback_kwargs) ...
 Local vars
/home/web/cptm_venv/lib/python2.7/site-packages/django/views/generic/base.py in view
        return self.dispatch(request, *args, **kwargs) ...
 Local vars
/home/web/cptm_venv/lib/python2.7/site-packages/django/views/decorators/csrf.py in    wrapped_view
    return view_func(*args, **kwargs) ...
 Local vars
/home/web/cptm_venv/lib/python2.7/site-packages/rest_framework/views.py in dispatch
        response = self.handle_exception(exc) ...
 Local vars
/home/web/cptm_venv/lib/python2.7/site-packages/rest_framework/views.py in dispatch
        self.initial(request, *args, **kwargs) ...
 Local vars
/home/web/cptm_venv/lib/python2.7/site-packages/rest_framework/views.py in initial
    self.check_permissions(request) ...
 Local vars
/home/web/cptm_venv/lib/python2.7/site-packages/rest_framework/views.py in   check_permissions
     for permission in self.get_permissions(): ...
 Local vars
/home/web/cptm_venv/lib/python2.7/site-packages/rest_framework/views.py in get_permissions
    return [permission() for permission in self.permission_classes] ...
 Local vars

其餘的代碼與第二部分和第三部分的上面的鏈接中給出的幾乎相同:views.py

from apps.authentication.models import UserProfile
from apps.authentication.serializers import UserProfileSerializer
from rest_framework import mixins
from rest_framework import generics

class UserProfileList(mixins.ListModelMixin,
              mixins.CreateModelMixin,
              generics.GenericAPIView):
    queryset = UserProfile.objects.all()
    serializer_class = UserProfileSerializer

    def get(self, request, *args, **kwargs):
        return self.list(request, *args, **kwargs)

    def post(self, request, *args, **kwargs):
        return self.create(request, *args, **kwargs)


class UserProfileDetail(mixins.RetrieveModelMixin,
                mixins.UpdateModelMixin,
                mixins.DestroyModelMixin,
                generics.GenericAPIView):
    queryset = UserProfile.objects.all()
    serializer_class = UserProfileSerializer

    def get(self, request, *args, **kwargs):
        return self.retrieve(request, *args, **kwargs)

    def put(self, request, *args, **kwargs):
        return self.update(request, *args, **kwargs)

    def delete(self, request, *args, **kwargs):
        return self.destroy(request, *args, **kwargs)

urls.py

from django.conf.urls import patterns, url
from rest_framework.urlpatterns import format_suffix_patterns
from apps.authentication import views

urlpatterns = patterns('',
    url(r'^userprofile/$', views.UserProfileList.as_view()),
    url(r'^userprofile/(?P<pk>[0-9]+)/$', views.UserProfileDetail.as_view()),
)

urlpatterns = format_suffix_patterns(urlpatterns)

我錯過了一些非常明顯的東西,為了搜索究竟是什麼“不能迭代的類型對象”在這個上下文中是什麼意思,以及哪個對象導致了問題,但是沒有運氣,我嘗試了很多東西。 我正在使用Django Rest Framework 2.3版本。

提前致謝


正如Daniel上面指出的那樣,我在設置文件中有這個愚蠢的代碼,這導致了問題,

#REST_FRAMEWORK = {
#   '''Use hyperlinked styles by default'''
#   '''only used if serializer_class attribute is not set on a view'''
#   'DEFAULT_MODEL_SERIALIZER_CLASS':
#         'rest_framkework.serializers.HyperLinkedModelSerializer',
#   'DEFAULT_PERMISSION_CLASSES':
#          'rest_framework.permissions.DjangoModelPermissionsOrAnonReadOnly'
# }

委託這個,它的工作。


只是為了讓別人知道,我不斷得到這個相同的錯誤,發現我忘記了在我的REST_FRAMEWORK包含一個逗號。 我有這個:

'DEFAULT_PERMISSION_CLASSES': (
    'rest_framework.permissions.IsAuthenticated'
),

而不是這個:

'DEFAULT_PERMISSION_CLASSES': (
    'rest_framework.permissions.IsAuthenticated',
),

逗號定義這是一個元素的元組


如果您需要在某些類中進行身份驗證,請在您的類中傳遞身份驗證類而不是在settings.py中,並執行下面的操作:

authentication_classes = [TokenAuthentication, ]

而不是像這樣:

authentication_classes = TokenAuthentication

在我的情況下,錯字是在views.py 。 代替 ...

permission_classes = (permissions.IsAuthenticated,)

我有...

permission_classes = (permissions.IsAuthenticated)






django-rest-framework