Django Rest框架KeyError 'request'

Question

我有这样的序列化器

class PublicacionSerializer(serializers.ModelSerializer):
    usuario = UserSerializer2()
    likeado = serializers.SerializerMethodField()

    class Meta:
        model = Publicacion
        fields = ('id','usuario', 'likeado')

    def get_likeado(self, obj):
        user = self.context['request'].user
        try:
            like = Like.objects.get(publicacion=obj, usuario=user)
            return like.id
        except Like.DoesNotExist:
            return False

所以我在另一个序列化器中使用该序列化器:

class EstadoSerializer(serializers.ModelSerializer):
    publicacion = PublicacionSerializer(read_only=True)

在views.py中我有

class ModificarEstadoMixin(object):
    queryset = Estado.objects.all()
    serializer_class = EstadoSerializer

class ModificarEstadoDetail(ModificarEstadoMixin, RetrieveUpdateAPIView):
    permission_classes = (permissions.IsAuthenticated,
              CanModifEstado,)
    pass

当我访问网址以了解用户是否喜欢某个帖子时，我在代码行中收到 KeyError“请求”

user = self.context['request'].user

谁知道怎么解决？

Answer 1

当您调用该序列化程序时，您必须从 View 传递上下文，例如

MySerializer(context={'request': request})