序列化组件写图书接口

一、先建好表格

models.py

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()

    publish = models.ForeignKey(to='Publish', to_field='nid', on_delete=models.CASCADE)
    authors = models.ManyToManyField(to='Author')

class Author(models.Model):
    nid = models.AutoField(primary_key=True)
    name = models.CharField(max_length=32)
    age = models.IntegerField()
    author_detail = models.OneToOneField(to='AuthorDatail', to_field='nid', unique=True, on_delete=models.CASCADE)


class AuthorDatail(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()

二、写一个序列化类继承ModelSerializer

新建myser.py文件

from rest_framework import serializers
from app01 import models

class BookSerializers(serializers.ModelSerializer):
    class Meta:
        model = models.Book
        fields = '__all__'

三、在视图函数使用序列化的类

views.py:

from rest_framework.views import APIView
from app01 import models
from app01.myser import BookSerializers
from rest_framework.response import Response


class Books(APIView):
    def get(self, request, *args, **kwargs):
        response = {'code': 100, 'msg': '查询成功'}
        ret = models.Book.objects.all()
        book_ser = BookSerializers(instance=ret, many=True)
        response['data'] = book_ser.data
        return Response(response)

    def post(self, request, *args, **kwargs):
        response = {'code': 100, 'msg': '新增成功'}
        book_ser = BookSerializers(data=request.data)
        if book_ser.is_valid():
            book_ser.save()
        else:
            response['code'] = 101
            response['msg'] = book_ser.errors   # 错误信息被response序列化出来返回前端
        return Response(response)


class BookDetail(APIView):
    def get(self, request, id, **kwargs):  # id是有名分组传过来的id
        response = {'code': 100, 'msg': '查询成功'}
        ret = models.Book.objects.filter(pk=id).first()
        book_ser = BookSerializers(instance=ret, many=False)
        response['data'] = book_ser.data
        return Response(response)

    def put(self, request, id, **kwargs):
        response = {'code': 100, 'msg': '修改成功'}
        ret = models.Book.objects.filter(pk=id).first()
        book_ser = BookSerializers(instance=ret, data=request.data)  # 修改需要传两个参数
        if book_ser.is_valid():
            book_ser.save()  # 校验通过，如果不是空，调update方法, 如果是空，调create方法
                             # 原因是ModelSerializer 重写了这两个方法
        else:
            response['code'] = 101
            response['msg'] = book_ser.errors
        return Response(response)

    def delete(self, request, id, **kwargs):
        response = {'code': 100, 'msg': '删除成功'}
        models.Book.objects.filter(pk=id).delete()
        return Response(response)

urls.py

url(r'^books/$', views.Books.as_view()),
url(r'^books/(?P<id>d+)$', views.BookDetail.as_view()),

演示：

新增数据

修改数据