django序列化单表的4种方法的介绍

from django.db import models

# Create your models here.


class Book(models.Model):
    id = models.AutoField(primary_key=True)
    book_name = models.CharField(max_length=64,null=False,blank=False,verbose_name="书籍名称")
    book_price = models.DecimalField(max_digits=5,decimal_places=2,null=False,blank=False,verbose_name="书籍价格")
    book_publish = models.ForeignKey(to="Publish",to_field="id",verbose_name="书籍出版社")
    book_auther = models.ManyToManyField(to="Auther",verbose_name="书籍作者")

    class Meta:
        verbose_name = "书籍表"
        verbose_name_plural = verbose_name
    def __str__(self):
        return self.book_name





class Publish(models.Model):
    id = models.AutoField(primary_key=True)
    publish_name = models.CharField(max_length=64,null=False,blank=False)

    class Meta:
        verbose_name = "出版社表"
        verbose_name_plural = verbose_name

    def __str__(self):
        return self.publish_name


class Auther(models.Model):
    id = models.AutoField(primary_key=True)
    auther_name = models.CharField(max_length=64,null=False,blank=False)
    def __str__(self):
        return self.auther_name

    class Meta:
        verbose_name = "作者表"
        verbose_name_plural = verbose_name

from django import views

import json
class test_cbv(views.View):
    def get(self,request,*args,**kwargs):

        # 一、序列化

        publish_list = models.Publish.objects.all()
        publish_obj = models.Publish.objects.all().first()


        # 方式1
        # ser1 = publish_list.values("id","publish_name")
        # ret1 = json.dumps(list(ser1))
        # return HttpResponse(ret1)


        # 2、方式二
        # from django.forms.models import model_to_dict
        # model_to_dict 把一个model对象转换为字典的方法
        # ret2 = []
        # for obj in publish_list:
        #     temp.append(model_to_dict(obj))
        # return HttpResponse(json.dumps(ret2))


        # 3、方式3
        # from django.core import serializers
        # serializers ---django的序列化组件

        # ret3 = serializers.serialize(format="json",queryset=publish_list)
        # 指明格式为json，传递一个queryset对象进去就可以了

        # return HttpResponse(ret3)

# 为queryset或者model对象做序列化的类
from rest_framework import serializers
class pub_serializers(serializers.Serializer):
    publish_name = serializers.CharField()　　

        # 4、方式4
        # ps_queryset = pub_serializers(publish_list,many=True)
        # return HttpResponse(ps_queryset.data)

        ps_model = pub_serializers(publish_obj)
        print(ps_model.data)
        return HttpResponse(ps_model.data)