在Django序列化程序中获取另一个模型的信息的正确方法是什么？

from rest_framework import serializers
from .models import Author

class AuthorSerializer(serializers.ModelSerializer):
    class Meta:
        model = Author
        fields = '__all__'  # 或指定需要序列化的字段列表

class BookSerializer(serializers.ModelSerializer):
    author = serializers.SerializerMethodField()

    def get_author(self, obj):
        author = obj.author
        author_serializer = AuthorSerializer(author)
        return author_serializer.data

    class Meta:
        model = Book
        fields = '__all__'

from rest_framework import generics
from .serializers import BookSerializer
from .models import Book

class BookAPIView(generics.ListAPIView):
    queryset = Book.objects.all()
    serializer_class = BookSerializer