Django---drf请求和响应、视图---作业

1 自己封装一个CommonResponse对象，使用方法如下

        return CoomonResponse('100','成功',boo_ser.data)
        return CoomonResponse('101','验证失败',boo_ser.errors)

2 什么是正向代理，什么是反向代理

服务器A是别人的内网，服务器B可以访问，我们需要通过服务器B去访问服务器A成为正想代理
发布了一个项目在服务器A，但是不想让人知道自己ip怕有危险，浴室就让服务器B去访问服务器A，然后把A返回的信息给B，
你访问服务器A其实是在访问服务器B，这样就把A的地址隐藏了，称为反向代理。

原文链接

3 大家都写：分别用APIView，GenericAPIView，GenericAPIView和5个视图扩展类写的接口和ModelViewSet写5个接口

views.py

from django.shortcuts import render
from app01 import models
# Create your views here.
from app01.ser import BookSerializer
from app01.models import Book
from rest_framework.views import APIView
from rest_framework.response import Response
#Apiview
class BookView(APIView):
    def get(self,request):
        book_list = Book.objects.all()
        book_ser = BookSerializer(book_list,many=True)
        return Response(book_ser.data)
    def post(self,request):
        book_ser = BookSerializer(data=request.data)
        if book_ser.is_valid():
            book_ser.save()
            return Response(book_ser.data)
        else:
            return Response({'status':101,'msg':'校检失败'})

class BookDetailView(APIView):
    def get(self,request,pk):
        book = Book.objects.all().filter(pk= pk).first()
        book_ser = BookSerializer(book)
        return Response(book_ser.data)

    def put(self,request,pk):
        book = Book.objects.all().filter(pk=pk).first()
        book_ser = BookSerializer(instance=book,data=request.data)
        if book_ser.is_valid():
            book_ser.save()
            return Response(book_ser.data)
        else:
            return Response({'status':'101','msg':'校检失败'})

    def delete(self,request,pk):
        ret = Book.objects.filter(pk=pk).delete()
        return Response({'status':100,'msg':'删除成功'})

#基于GennerricAPIview
from rest_framework.generics import GenericAPIView
class Book2View(GenericAPIView):
    queryset = Book.objects
    serializer_class = BookSerializer
    def get(self,request):
        book_list = self.get_queryset()
        book_ser = BookSerializer(book_list,many=True)
        return Response(book_ser.data)
    def post(self,request):
        book_ser = self.get_serializer(data=request.data)
        if book_ser.is_valid():
            book_ser.save()
            return Response(book_ser.data)
        else:
            return Response({'status':'101','msg':'校检失败'})



class Book2DetailView(GenericAPIView):
    queryset = Book.objects
    serializer_class = BookSerializer
    def get(self,request,pk):
        book = self.get_object()
        book_ser = self.get_serializer(book)
        return Response(book_ser.data)

    def put(self,request,pk):
        book = self.get_object()
        book_ser = self.get_serializer(instance=book,data=request.data)
        if book_ser.is_valid():
            book_ser.save()
            return Response(book_ser.data)
        else:
            return Response({'status':'101','msg':'校检失败'})



    def delete(self,request,pk):
        ret = self.get_object().delete()
        return Response({'status':100,'msg':'删除成功'})


#GennerricAPIView和5个视图扩展类
from rest_framework.mixins import ListModelMixin,CreateModelMixin,UpdateModelMixin,\
    DestroyModelMixin ,RetrieveModelMixin
class Book3View(GenericAPIView,ListModelMixin,CreateModelMixin):
    queryset = Book.objects
    serializer_class = BookSerializer
    def get(self,request):
        return self.list(request)

    def post(self,request):
        return self.create(request)

class Book3DetailView(GenericAPIView,RetrieveModelMixin,DestroyModelMixin,UpdateModelMixin):
    queryset = Book.objects
    serializer_class = BookSerializer
    def get(self,request,pk):
        return self.retrieve(request,pk)

    def put(self,request,pk):
        return self.update(request,pk)
    def delete(self,request,pk):
        return self.delete(request,pk)


#ModelViewSet
from rest_framework.viewsets import ModelViewSet
class Book4View(ModelViewSet):
    queryset = Book.objects
    serializer_class = BookSerializer

models.py

from django.db import models

# Create your models here.
class Book(models.Model):
    id = models.AutoField(primary_key=True)
    name = models.CharField(max_length=32)
    price = models.DecimalField(decimal_places=2,max_digits=5)
    author = models.CharField(max_length=32)
    publish = models.CharField(max_length=64)

app01下ser.py创建序列化类

ser.py

from rest_framework import serializers
from app01.models import Book

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

urls.py

from django.contrib import admin
from django.urls import path,re_path
from app01 import views
urlpatterns = [
    path('admin/', admin.site.urls),
    path('books/',views.BookView.as_view()),
    re_path('book/(?P<pk>\d+)',views.BookDetailView.as_view()),

    path('books2/', views.Book2View.as_view()),
    re_path('book2/(?P<pk>\d+)', views.Book2DetailView.as_view()),

    path('books3/', views.Book3View.as_view()),
    re_path('book3/(?P<pk>\d+)', views.Book3DetailView.as_view()),

    path('books4/', views.Book4View.as_view(actions={'get':'list','post':'create'})),
    re_path('book4/(?P<pk>\d+)', views.Book4View.as_view(actions={'get':'retrieve','put':'update','delete':'destroy'})),
]

settings.py注册djangorestframwork组件

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'app01.apps.App01Config',
    'rest_framework'
]

4 今天讲的所有视图类的继承关系，写出来

APIView>>>View>>>object>>>hashable


GenericAPIView>>>APIView>>>View>>>object>>>hashable


ListModelMixin,CreateModelMixin,UpdateModelMixin,DestroyModelMixin ,RetrieveModelMixin>>>object

ModelViewSet	ListModelMixin,CreateModelMixin,UpdateModelMixin,DestroyModelMixin ,RetrieveModelMixin>>>object
		GenericAPIView>>>APIView>>>View>>>object>>>hashable
		GenericAPIView>>>ViewSetMixin