'ListSerializer'オブジェクトが呼び出せません

Question

私はcontent_typeオブジェクトを持つ投票アプリケーション用のDjango-Restフレームワークを実装しようとしています。私はrest-framework-generic-relationsをserializers.pyに使ってみました。エラーはserializer.py/views.pyの中にある可能性がありますが、私はこのフレームワークには新しく、助けていただければ幸いです！

views.py：

class vote_detail(generics.RetrieveUpdateDestroyAPIView): 
    queryset = VotedItem.objects.all() 
    serializer_class = VoteSerializer(queryset, many=True) 

がserializers.py：

from rest_framework import serializers 
from .models import VotedItem 
from posts.models import Post 
from generic_relations.relations import GenericRelatedField 

class PostSerializer(serializers.ModelSerializer): 
    class Meta: 
     model = Post 
     fields = ('title',) 

class VoteSerializer(serializers.ModelSerializer): 
     """ 
     A `VotedItem` serializer with a `GenericRelatedField` mapping all possible 
     models to their respective serializers. 
     """ 
    voted_object = GenericRelatedField({ 
     Post: PostSerializer(), 
    }) 

    class Meta: 
     model = VotedItem 
     fields = ('user', 'voted_object') 

とmodels.py：

from __future__ import unicode_literals 

from datetime import datetime 

from django.utils.encoding import python_2_unicode_compatible 
from django.db import models 
from django.contrib.contenttypes.fields import GenericForeignKey, GenericRelation 
from django.contrib.contenttypes.models import ContentType 
from django.core.urlresolvers import reverse 
from django.utils import timezone 
from django.contrib.auth.models import User 
from social_count.managers import VoteManager 

SCORES = (
    (+1, '+1'), 
    (-1, '-1'), 
) 

@python_2_unicode_compatible 
class VotedItem(models.Model): 
    """ 
    A vote on an object by a User. 
    """ 
    user = models.ForeignKey(User) 
    content_type = models.ForeignKey(
     ContentType, 
     null=True, 
     blank=True, 
     on_delete=models.CASCADE, 
    ) 
    object_id = models.PositiveIntegerField(  
     null=True, 
    ) 
    content_object = GenericForeignKey('content_type', 'object_id') 
    vote = models.SmallIntegerField(choices=SCORES, blank=True, null=True) 
    flag = models.NullBooleanField(blank=True, null=True) 
    timestamp = models.DateTimeField(auto_now=False, auto_now_add=True) 

    objects = VoteManager() 

    class Meta: 
     db_table = 'votes' 
     # One vote per user per object 
     unique_together = (('user', 'content_type', 'object_id'),) 

    def __str__(self): 
     return '%s: %s on %s' % (self.user, self.vote, self.content_object) 

    def is_upvote(self): 
     return self.vote == 1 

    def is_downvote(self): 
     return self.vote == -1 

私はwww.mypage.com/likes/apiを訪問/ 1 /エラーメッセージが表示されます：

Traceback: 

File "/home/henry/newpine/src/env/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response 
    149.      response = self.process_exception_by_middleware(e, request) 

File "/home/henry/newpine/src/env/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response 
    147.      response = wrapped_callback(request, *callback_args, **callback_kwargs) 

File "/home/henry/newpine/src/env/local/lib/python2.7/site-packages/django/views/decorators/csrf.py" in wrapped_view 
    58.   return view_func(*args, **kwargs) 

File "/home/henry/newpine/src/env/local/lib/python2.7/site-packages/django/views/generic/base.py" in view 
    68.    return self.dispatch(request, *args, **kwargs) 

File "/home/henry/newpine/src/env/local/lib/python2.7/site-packages/rest_framework/views.py" in dispatch 
    466.    response = self.handle_exception(exc) 

File "/home/henry/newpine/src/env/local/lib/python2.7/site-packages/rest_framework/views.py" in dispatch 
    463.    response = handler(request, *args, **kwargs) 

File "/home/henry/newpine/src/env/local/lib/python2.7/site-packages/rest_framework/generics.py" in get 
    286.   return self.retrieve(request, *args, **kwargs) 

File "/home/henry/newpine/src/env/local/lib/python2.7/site-packages/rest_framework/mixins.py" in retrieve 
    57.   serializer = self.get_serializer(instance) 

File "/home/henry/newpine/src/env/local/lib/python2.7/site-packages/rest_framework/generics.py" in get_serializer 
    111.   return serializer_class(*args, **kwargs) 

Exception Type: TypeError at /likes/api/1/ 
Exception Value: 'ListSerializer' object is not callable 

Answer 1

エラーは、clasの代わりにListSerializerのインスタンスであるserializer_classを呼び出そうとしていることです。

は、このべきではない：このエラーは、あなたの提案に変更した後にトリガされ

serializer_class = VoteSerializer