django仅从序列化程序中的多对多字段中选择特定字段

from django.db import models

class Author(models.Model):
    name = models.CharField(max_length=100)

class Book(models.Model):
    title = models.CharField(max_length=100)
    authors = models.ManyToManyField(Author)

from rest_framework import serializers

class AuthorSerializer(serializers.ModelSerializer):
    class Meta:
        model = Author
        fields = ['name']  # 只选择'name'字段

class BookSerializer(serializers.ModelSerializer):
    authors = AuthorSerializer(many=True)  # 使用嵌套的AuthorSerializer

    class Meta:
        model = Book
        fields = ['title', 'authors']

class AuthorNameField(serializers.RelatedField):
    def to_representation(self, value):
        return value.name  # 只返回作者的名字

class BookSerializer(serializers.ModelSerializer):
    authors = AuthorNameField(read_only=True, many=True)

    class Meta:
        model = Book
        fields = ['title', 'authors']

from django.shortcuts import get_object_or_404
from rest_framework.views import APIView
from rest_framework.response import Response

class BookDetailView(APIView):
    def get(self, request, pk):
        book = get_object_or_404(Book.objects.prefetch_related('authors'), pk=pk)
        serializer = BookSerializer(book)
        return Response(serializer.data)