restframework读取和非读取序列处理

使用restframework的时候，网页前端如果只是单纯get请求的话，会涉及到一些我们自定义方法的字段，如果在这个页面在提交就会报错，所以序列的时候可以区分开这些需求，设计两个序列化，get请求序列化和put,patch,delete,post序列化
serializers.py

class BookReadSerializer(serializers.ModelSerializer):
    category = CategorySerializer()
    author = AuthorSerializer()
    class Meta:
        model = Book
        fields = '__all__'

class BookWriteSerializer(serializers.ModelSerializer):
    class Meta:
        model = Book
        fields = "__all__"

views.py

class BookViewSet(viewsets.ModelViewSet):
    queryset = Book.objects.all()

    def get_serializer_class(self):
        if self.request.method in ['GET', 'HEAD']:
            return BookReadSerializer
        else:
            return BookWriteSerializer

直接区分开了，不同的请求方法调用不同序列