如何使用django rest框架修改多对多集合

# models.py
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)

# serializers.py
from rest_framework import serializers
from .models import Author, Book

class AuthorSerializer(serializers.ModelSerializer):
    class Meta:
        model = Author
        fields = '__all__'

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

    class Meta:
        model = Book
        fields = '__all__'

    def create(self, validated_data):
        authors_data = validated_data.pop('authors')
        book = Book.objects.create(**validated_data)
        for author_data in authors_data:
            author, _ = Author.objects.get_or_create(**author_data)
            book.authors.add(author)
        return book

    def update(self, instance, validated_data):
        authors_data = validated_data.pop('authors', None)
        instance.title = validated_data.get('title', instance.title)
        if authors_data is not None:
            instance.authors.clear()
            for author_data in authors_data:
                author, _ = Author.objects.get_or_create(**author_data)
                instance.authors.add(author)
        instance.save()
        return instance

# views.py
from rest_framework import viewsets
from .models import Book
from .serializers import BookSerializer

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