DRF单表序列化和反序列化

DRF序列化和反序列化

• 安装 djangorestframework

  pip install djangorestframework
  

• 将rest_framework注册到app上

  INSTALLED_APPS = [
      'rest_framework',
      'app01'
      ....
  ]
  

• urls

  from django.urls import path
  from . import views
  urlpatterns = [
      path('index/',views.UserView.as_view())
  ]
  

• 在models.py

  from django.db import models
  
  # 用户
  class User(models.Model):
      name = models.CharField(max_length=32,unique=True,null=True)
  

• 在 app01 文件下 新建 serializer.py

  from rest_framework import serializers
  from .models import User
  
  # 序列化
  class UserSerializers(serializers.ModelSerializer):
      
      class Meta:
          model = User
          fields = '__all__'
          
  # 反序列化        
  class UserUnSerializer(serializers.Serializer):
      name = serializers.CharField(max_length=32)
      password = serializers.CharField(max_length=255)
      
      # 添加数据
      def create(self,data):
          return User.objects.create(**data)
      
      # 更新数据
      def update(self,instance,data):
          return instance.update(**data)
      
  

• 在 views

  from rest_framework.response import Response
  from rest_framework.views import APIView
  from . import models
  from .serializer import UserSerializers
  
  class UserView(APIView):
      
      def get(self,request):
      	user = models.User.objects.all()
          # 序列化 将对象转成json串
          data = UserSerializers(user,many=True)
          return Response(data)
      
       # 添加数据
      def post(self,request):
          name = request.POST.get('name','').strip()
          password = request.POST.get('password','').strip()
          dic = {"name":name,"password":password}
          user = UserUnSerializer(data=dic)
          if user.is_valid():
              user.save()
              return HttpResponse('post-ok')
          return HttpResponse('post-no')
  
      # 更新数据
      def put(self,request):
          id = request.POST.get('id','0')
          obj = models.User.objects.filter(id=id)
          name = request.POST.get('name','').strip()
          dic = {"name":name}
          user = UserUnSerializer(obj,data=dic)
          if user.is_valid():
              user.save()
              return HttpResponse('put-ok')
          return HttpResponse('put-no')