from django.db import models
# Create your models here.
class Book(models.Model):
title=models.CharField(max_length=32)
price=models.IntegerField()
pub_date=models.DateField()
publish=models.ForeignKey("Publish")
authors=models.ManyToManyField("Author")
def __str__(self):
return "app02 %s" % self.title
class Meta:
app_label=‘app02‘
class Publish(models.Model):
name=models.CharField(max_length=32)
email=models.EmailField()
def __str__(self):
return "app02 %s" % self.name
class Meta:
app_label = ‘app02‘
class Author(models.Model):
name=models.CharField(max_length=32)
age=models.IntegerField()
def __str__(self):
return "app02 %s" %self.name
class Meta:
app_label = ‘app02‘
对多序列化的两种方式,以下两种只适用于查取数据
class BookSerializers(serializers.Serializer): id=serializers.IntegerField() title=serializers.CharField() price=serializers.IntegerField() pub_date=serializers.DateField() # 多对一 # source = "publish.email" # 可以指定model中的函数,也可以指定字段 # 这种方式不使用于多对多,适用于一对一和多对一 publish=serializers.CharField(source="publish.name",read_only=False) # 多对多 authors=serializers.SerializerMethodField() # 钩子函数序列化,必须是以get_开头的 def get_authors(self,obj): author=obj.authors.all() auth=AuthorSerializers(author,many=True) return auth.data
class BookModelSerializers(serializers.ModelSerializer): class Meta: model=models.Book fields=‘__all__‘ # 多对多 authors = serializers.SerializerMethodField() # 钩子函数序列化,必须是以get_开头的 def get_authors(self, obj): author = obj.authors.all() auth = AuthorSerializers(author, many=True) return auth.data
原文：https://www.cnblogs.com/xzcvblogs/p/12310286.html