视图额外动作

1.视图额外动作

• 目的：扩展视图集功能，添加额外动作

• 操作流程

  • 1，路由

  • from django.contrib import admin
    from django.urls import path, include
    from . import views
    
    urlpatterns = [
    
        path('book/', views.BookModelViewSet.as_view({'get': 'list', 'post': 'create'})),
        path('book/<int:pk>', views.BookModelViewSet.as_view({'get': 'retrieve', 'put': 'update', 'delete': 'destroy'})),
        path('book/bread', views.BookModelViewSet.as_view({'get': 'bread_book'})),
    ]
    

  • 2，视图

  • from django.shortcuts import render
    from rest_framework.viewsets import ModelViewSet
    from .models import *
    from .serializers import BookInfoModelSerializer
    from rest_framework.response import Response
    
    #视图集
    class BookModelViewSet(ModelViewSet):
        queryset = BookInfo.objects.all()
        serializer_class = BookInfoModelSerializer
        #获取阅读量大于20的
        def bread_book(self,request):
            #获取指定书籍
            books=BookInfo.objects.filter(bread__gt=100)
            #创建序列化器对象
            serializer=self.serializer_class(instance=books,many=True)
            #返回数据
            return Response(serializer.data)
    

  • 视图集额外动作，partial

    • 1，路由

    • from django.contrib import admin
      from django.urls import path, include
      from . import views
      
      urlpatterns = [
          ......
          path('book/update_book_bread/<int:pk>', views.BookModelViewSet.as_view({'put': 'update_book_bread'})),
      ]
      

    • 视图

    • class BookModelViewSet(ModelViewSet):
          queryset = BookInfo.objects.all()
          serializer_class = BookInfoModelSerializer
          ......
      
          def update_book_bread(self,request,pk):
              book = self.get_object() #拿到一调数据
              data = request.data #获取页面数据 
              serializer = self.get_serializer(instance=book,data=data,partial = True) #partial同意修改单个
       
              serializer.is_valid(raise_exception=True) #校验
              serializer.save() #保存
      
              return Response(serializer.data,status=201) 返回