序列化

from .models import Book
　　

class PublisherSerializer(serializers.Serializer):
　　id = serializers.IntegerField(read_only=True)
　　title = serializers.CharField(max_length=32)

class UserSerializer(serializers.Serializer):
　　id = serializers.IntegerField(read_only=True)
　　name = serializers.CharField(max_length=32)
　　age = serializers.IntegerField()

class BookSerializer(serializers.Serializer):
　　id = serializers.IntegerField(read_only=True)
　　title = serializers.CharField(max_length=32)
　　CHOICES = ((1,'Linux'),(2,'Python'),(3,'Go'))
　　category= serializers.ChoiceField(choices=CHOICES,
　　source='get_category_display',read_only=True)
　　pub_time = serializers.DateField()

　　publisher = PublisherSerializer(read_only=True)
　　user = UserSerializer(many=True,read_only=True)

  

id = serializers.IntegerField(read_only=True)
　　title = serializers.CharField(max_length=32)
　　CHOICES = ((1,'Linux'),(2,'Python'),(3,'Go'))
　　category = serializers.ChoiceField(choices=CHOICES,
　　　　source='get_category_display',read_only=True)
　　post_category = serializers.IntegerField(write_only=True)
　　pub_time = serializers.DateField()
　　
　　publisher = PublisherSerializer(read_only=True)
　　user = UserSerializer(many=True, read_only=True)

　　users = serializers.ListField(write_only=True)
　　publisher_id = serializers.IntegerField(write_only=True)

　　def create(self, validated_date):
　　　　book = Book.objects.create(title=validated_data['title'],
　　　　category=validated_data['post_category'], pub_time=validate_data['pub_time'],
　　　　publisher_id=validated_data['publisher_id'])
　　　　book.user.add(*validated_data['users'])
　　　　return book