多表序列化

urls.py

urlpatterns = [
    path('admin/', admin.site.urls),
    path('books/',views.Books.as_view()),
    path('books/<int:pk>',views.Booksid.as_view()),
]

models.py

from django.db import models

# Create your models here.
class Book(models.Model):
    nid = models.AutoField(primary_key=True)
    name = models.CharField(max_length=32)
    price = models.DecimalField(max_digits=5, decimal_places=2)
    # publish_date = models.DateField(null=True)

    # 关联关系
    publish = models.ForeignKey(to='Publish', to_field='nid', on_delete=models.CASCADE)
    authors = models.ManyToManyField(to='Author')  # 自动生成中间表

    def publish_detail(self):
        return {'name':self.publish.name,'city':self.publish.city}

    def author_list(self):
        list1 = []
        for author in self.authors.all():
            list1.append(author.name)
        return list1

    def __str__(self):
        return self.name


class Author(models.Model):
    nid = models.AutoField(primary_key=True)
    name = models.CharField(max_length=32)
    age = models.IntegerField()
    author_detail = models.OneToOneField(to='AuthorDetail', on_delete=models.CASCADE)
    
    def __str__(self):
        return self.name


class AuthorDetail(models.Model):
    nid = models.AutoField(primary_key=True)
    telephone = models.BigIntegerField()
    birthday = models.DateField()
    addr = models.CharField(max_length=64)


class Publish(models.Model):
    nid = models.AutoField(primary_key=True)
    name = models.CharField(max_length=32)
    city = models.CharField(max_length=32)
    email = models.EmailField()

    def __str__(self):
        return self.name

serializer.py

from app01 import models
from rest_framework import serializers


class BooksSerializer(serializers.ModelSerializer):
    class Meta:
        model = models.Book
        #方法一
        # fields = ['nid', 'name', 'price', 'publish_detail', 'author_list', 'publish', 'authors']
        # extra_kwargs = {
        #     'publish': {'write_only': True},
        #     'authors': {'write_only': True},
        # }
        ###########################################################################################################
        #方法二:在表模型models中写方法,在序列化类中写到fields中
        fields = ['nid', 'name', 'price',  'publish', 'authors' , 'publish_detail','author_list']
        extra_kwargs = {
            'publish': {'write_only': True},
            'authors': {'write_only': True},
            'publish_detail':{'read_only':True},
            'author_list':{'read_only':True},
        }

    # 方法一:重写字段+必须配合一个方法,方法返回啥，该字段就是什么--->该字段只能序列化
    # publish_detail = serializers.SerializerMethodField(read_only=True)
    #
    # def get_publish_detail(self, book):
    #     return {'name': book.publish.name, 'city': book.publish.city}
    #
    # author_list = serializers.SerializerMethodField(read_only=True)
    #
    # def get_author_list(self, obj):
    #     author_list = []
    #     for author in obj.authors.all():
    #         author_list.append(author.name)
    #     return author_list

views.py

from django.shortcuts import render
from rest_framework.views import APIView
from rest_framework.response import Response
# Create your views here.
from .models import Book
from .serialzer import BooksSerializer
class Books(APIView):
    def get(self,request):
        books = Book.objects.all()
        ser = BooksSerializer(instance=books,many=True)
        return Response(ser.data)

    def post(self,request):
        ser = BooksSerializer(data=request.data)
        if ser.is_valid():
            ser.save()
            return Response({'code':'200','msg':'添加成功'})
        else:
            return Response({'code': '201', 'msg': '添加失败', 'errors': ser.errors})

class Booksid(APIView):
    def get(self,request,pk):
        book = Book.objects.filter(pk=pk).first()
        ser = BooksSerializer(instance=book,many=False)
        return Response(ser.data)

    def put(self,request,pk):
        book = Book.objects.all().filter(pk=pk).first()
        ser = BooksSerializer(instance=book,data=request.data)
        if ser.is_valid():
            ser.save()
            return Response({'code':'200','msg':'修改成功
标签：多表,name,models,self,publish,响应,return,序列化,True	

来源： https://www.cnblogs.com/chunyouqudongwuyuan/p/16382777.html