传递额外的参数到Django Rest Framework中的嵌套Serializer

我有这样的序列化器：

 

 class FirstModelSerializer(serializers.ModelSerializer):

       secondModel = SecondModelSerializer()

       class Meta:
            model = FirstModel
            fields = '__all__'

其中secondModel是FirstModel的ManyToMany字段.

有什么办法可以将FirstModel对象ID传递给SecondModelSerializer？

最佳答案

 

那比我想的容易.我只需要使用这样的上下文

 

class FirstModelSerializer(serializers.ModelSerializer):

      secondModel = SerializerMethodField()

      class Meta:
            model = FirstModel
            fields = '__all__'

      def get_secondModel(self, obj):
          return SecondModelSerializer(obj.secondModel.all(), many=True, context={'first_model_id': obj.id)).data

并在SecondModelSerializer中使用self.context.get(‘first_model_id’)来获取此ID.

转载:http://errornoerror.com/question/11501147506258023192/