Question

我创建了一个BaseResource

class BaseResource(ModelResource):

    def wrap_view(self, view):

        @csrf_exempt
        def wrapper(request, *args, **kwargs):
            try:
                callback = getattr(self, view)
                return callback(request, *args, **kwargs)
            except IntegrityError, e:

                return HttpResponse(e, status=300,
                                    reason='Internal Server error')

        return wrapper

    class Meta:

        allowed_methods = ['get', 'post', 'put']
        list_allowed_methods = ['get', 'post', 'put']
        detail_allowed_methods = ['get', 'post', 'put']
        include_resource_uri = False
        default_format = 'application/json'
        always_return_data = True
        throttle = BaseThrottle(throttle_at=3, timeframe=10,
                                expiration=1)
        authentication = MultiAuthentication(SessionAuthentication(),
                ApiKeyAuthentication())
        authorization = Authorization()
        serializer = urlencodeSerializer()

有我的资源：

class UserResource(BaseResource):

     groups = fields.ToManyFields('GroupResource', 'group')

    class Meta:

        queryset = User.objects.all()
        resource_name = 'user'
        excludes = ['password']
        authorization = Authorization()
        allowed_methods = ['get', 'post', 'put']
        filtering = {'username': ALL, 'email': ALL}


class GroupResource(BaseResource):

    user = fields.ForeignKey(UserResource, 'user') 
    permissions = fields.ToManyFields('PermissionResource','permissions_set', related_name='permission')

    class Meta:

        queryset = Group.objects.all()
        allowed_methods = ['get', 'post', 'put']
        resource_name = 'group'

class PermissionResource(BaseResource):

    group = fields.ToOneField('GroupResource', 'group_set') 

    class Meta:

        queryset = Permission.objects.all()
        allowed_methods = ['get']

我试图为扩展BaseResource的用户创建一个资源，但是当我建立关系时，我得到以下错误：

groups = fields.ToManyFields('GroupResource', 'group')
AttributeError: 'module' object has no attribute 'ToManyFields'

我已经搜索过，但是我找不到任何能让我感到满意的东西。有线索吗？我做错了什么？一切都是受欢迎的。谢谢！

Answer 1

AttributeError告诉你到底出了什么问题：

对于您的群组资源：

class GroupResource(BaseResource):

    user = fields.ForeignKey(UserResource, 'user') 
    permissions = fields.ToManyFields('PermissionResource','permissions_set', related_name='permission')

您正在使用ToManyFields，但您尚未在GroupResource中定义，这意味着它必须来自超级类，从BaseResource开始（未定义）和ModelResource，这里没有粘贴。

虽然您可以调试并查找实际定义此方法的位置，但您尝试使用的字段似乎不在Django documentation中，而是在TastyPie文档中。

你似乎有一个错字。 Django-TastyPie字段实际上名为ToManyField。

AttributeError：＆＃39;模块＆＃39;对象没有属性＆＃39; ToManyFields＆＃39;

1 个答案: