基于APIView写接口
# views.py
# 基于APIView写的
# 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': '校验失败'})
#
#
# class BookDataView(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):
# print(pk)
# book = Book.objects.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': '校验失败'})
#
# def delete(self,request,pk):
# ret = Book.objects.filter(pk=pk).delete()
# return Response({'status': 100, 'msg': '删除成功'})
# models.py:
from django.db import models
# Create your models here.
class Book(models.Model):
name = models.CharField(max_length=32)
price = models.DecimalField(max_digits=5,decimal_places=2)
publish = models.CharField(max_length=32)
# ser.py
from rest_framework import serializers
from app01.models import Book
class BookSerializer(serializers.ModelSerializer):
class Meta:
model = Book
fields = '__all__'
# urls.py:
path('books/', views.BookView.as_view()),
re_path('books/(?P<pk>d+)', views.BookDataView.as_view()),
基于GenericAPIView写的接口
# views.py:
# 基于GenericAPIView写的
class BookView(GenericAPIView):
# queryset要传queryset对象,查询了所有的图书
# serializer_class使用了哪个序列化类来序列化这堆数据
# queryset = Book.objects.all()
queryset = Book.objects
serializer_class = BookSerializer
def get(self, request):
book_list = self.get_queryset()
book_ser = self.get_serializer(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': '校验失败'})
class BookDataView(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):
print(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': '校验失败'})
def delete(self, request, pk):
ret = self.get_object().delete()
return Response({'status': 100, 'msg': '删除成功'})
# urls.py:
# 使用GenericAPIView重写的
path('books/', views.BookView.as_view()),
re_path('books/(?P<pk>d+)', views.BookDataView.as_view()),
基于GenericAPIView和五个视图扩展类写的接口
from rest_framework.mixins import ListModelMixin, CreateModelMixin, RetrieveModelMixin, UpdateModelMixin,
DestroyModelMixin
# views.py:
class BookListView(ListModelMixin, GenericAPIView, CreateModelMixin):
queryset = Book.objects.all()
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.all()
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.destroy(request, pk)
GenericAPIView的视图子类
# views.py:
# 使用ModelViewSet编写5个接口
from rest_framework.viewsets import ModelViewSet
class Book5View(ModelViewSet): # 5个接口都有,但是路由有点问题
queryset = Book.objects.all()
serializer_class = BookSerializer
# urls.py:
# 使用ModelViewSet编写5个接口
path('books5/', views.Book5View.as_view(actions={'get': 'list', 'post': 'create'})),
re_path('books5/(?P<pk>d+)',
views.Book5View.as_view(actions={'get': 'retrieve', 'put': 'update', 'delete': 'destroy'})),
源码分析ViewSetMixin
# 重写了as_view
# 核心代码(所以说路由中只要配置了对应关系,比如{'get':'list'},当get请求来,就会执行list方法
for method, action in actions.items():
# method:get
# action:list
handler = getattr(self, action)
# 执行完上一句,handler就变成了list的内存地址
setattr(self, method, handler)
# 执行完上一句 对象.get=list
# for循环完毕 对象.get:对着list 对象.post:对着create
继承ViewSetMixin的视图类
# views.py:
from rest_framework.viewsets import ViewSetMixin
class Book6View(ViewSetMixin, APIView): # 一定要放在APIView前面,继承的顺序:先找自己的,然后再从第一个父类中找,再找后面的,先执行谁就把谁放前面
def get_all_book(self, request):
print('执行了这个')
book_list = Book.objects.all()
book_ser = BookSerializer(book_list, many=True)
return Response(book_ser.data)
# urls.py:
# 继承ViewSetMixin的视图类,路由可以改写成这样
path('books6/', views.Book6View.as_view(actions={'get': 'get_all_book'})),