drf小练习2

目录

1 使用GenericAPIView写出book的5个接口

2 使用面向对象，写5个父类， 继承GenericAPIView+某几个父类后，就有某几个接口   

方法一:

方法二

九个子类视图

方式一

方式二

1 使用GenericAPIView写出book的5个接口

models.py

from django.db import models


class Book(models.Model):
    name = models.CharField(max_length=32)
    price = models.CharField(max_length=32)
    publish = models.CharField(max_length=32)

serializer.py

from rest_framework import serializers
from .models import Book

class BookSerializer(serializers.ModelSerializer):
    # name = serializers.CharField(max_length=32)
    # price = serializers.CharField(max_length=32)
    # publish = serializers.CharField(max_length=32)

    class Meta:
        model = Book
        fields = "__all__"

urls.py

from django.contrib import admin
from django.urls import path
from app01 import views
urlpatterns = [
    path('admin/', admin.site.urls),
    path('books/', views.BookView.as_view()),
    path('books/<int:pk>', views.BookDetailView.as_view()),
]

views.py

from rest_framework.generics import GenericAPIView
from rest_framework.response import Response
from .models import Book
from .serializer import BookSerializer


class BookView(GenericAPIView):
    queryset= Book.objects.all()
    serializer_class = BookSerializer

    def get(self,request):
        book_list = self.get_queryset()
        ser = self.get_serializer(instance=book_list,many=True)
        return Response(ser.data)

    def post(self,request):
        ser = self.get_serializer(data=request.data)
        if ser.is_valid():
            ser.save()
            return Response({'code':100,'msg':'新增成功'},status=201)
        else:
            return Response({'code':101,'msg':ser.errors})


class BookDetailView(GenericAPIView):
    queryset = Book.objects.all()
    serializer_class = BookSerializer

    def get(self,request,pk):
        book = self.get_object()
        ser = self.get_serializer(instance=book)
        return Response(ser.data)


    def put(self,request,pk):
        book = self.get_object()
        ser = self.get_serializer(instance=book,data=request.data)
        if ser.is_valid():
            ser.save()
            return Response({'code':100,'msg':'修改成功'},status=201)

    def delete(self,request,pk):
        Book.objects.filter(pk=pk).delete()
        return Response('')

2 使用面向对象，写5个父类， 继承GenericAPIView+某几个父类后，就有某几个接口
   

eg: 新增1条
    GenericAPIView+Create

方法一:

模型类与序列化类以及路由使用的还是上边的代码

views.py

class GetAll():
    def get(self, request):
        book_list = self.get_queryset()
        ser = self.get_serializer(instance=book_list, many=True)
        return Response(ser.data)

class Post():
    def post(self, request):
        ser = self.get_serializer(data=request.data)
        if ser.is_valid():
            ser.save()
            return Response({'code': 100, 'msg': '新增成功'}, status=201)
        else:
            return Response({'code': 101, 'msg': ser.errors})

class GetOne():
    def get(self,request,pk):
        book = self.get_object()
        ser = self.get_serializer(instance=book)
        return Response(ser.data)

class Put():
    def put(self,request,pk):
        book = self.get_object()
        ser = self.get_serializer(instance=book,data=request.data)
        if ser.is_valid():
            ser.save()
            return Response({'code':100,'msg':'修改成功'},status=201)

class Del():
    def delete(self,request,pk):
        Book.objects.filter(pk=pk).delete()
        return Response('')



class BookView(GenericAPIView,GetAll,Post):
    queryset= Book.objects.all()
    serializer_class = BookSerializer


class BookDetailView(GenericAPIView,GetOne,Put,Del):
    queryset = Book.objects.all()
    serializer_class = BookSerializer

方法二

class CheckOne(GenericAPIView):
    queryset = Book.objects.all()
    serializer_class = BookSerializer

    def get(self, request, pk):
        book = self.get_object()
        ser = self.get_serializer(instance=book)
        return Response(ser.data)


class CheckAll(GenericAPIView):
    queryset = Book.objects.all()
    serializer_class = BookSerializer

    def get(self, request):
        book_list = self.get_queryset()
        ser = self.get_serializer(instance=book_list, many=True)
        return Response(data=ser.data)


class AddOne(GenericAPIView):
    queryset = Book.objects.all()
    serializer_class = BookSerializer

    def post(self, request):
        ser = self.get_serializer(data=request.data)
        if ser.is_valid():
            ser.save()
            return Response(ser.data)
        else:
            return Response(ser.errors)


class ChangeOne(GenericAPIView):
    queryset = Book.objects.all()
    serializer_class = BookSerializer

    def put(self, request, pk):
        book = self.get_object()
        ser = self.get_serializer(instance=book, data=request.data)
        if ser.is_valid():
            ser.save()
            return Response(ser.data)
        else:
            return Response({'code': 100, 'msg': '修改成功'})


class DeleteOne(GenericAPIView):
    queryset = Book.objects.all()
    serializer_class = BookSerializer

    def delete(self, request, pk):
        self.get_queryset().filter(pk=pk).delete()
        return Response('ok')


class BookView(CheckAll, AddOne):
    def __init__(self):
        super(CheckAll, self).__init__()
        super(AddOne, self).__init__()


class BookDetailView(CheckOne, ChangeOne, DeleteOne):
    def __init__(self):
        super(CheckOne, self).__init__()
        super(ChangeOne, self).__init__()
        super(DeleteOne, self).__init__()

九个子类视图

方式一

# Create your views here.

# 1：查看一条数据
class CheckOne:
    def get(self, request, pk):
        book = self.get_object()
        ser = self.get_serializer(instance=book)
        return Response(ser.data)
# 2：查看所有数据
class CheckAll:
    def get(self, request):
        book_list = self.get_queryset()
        ser = self.get_serializer(instance=book_list, many=True)
        return Response(data=ser.data)
# 3.增加一条数据
class AddOne:
    def post(self, request):
        ser = self.get_serializer(data=request.data)
        if ser.is_valid():
            ser.save()
            return Response(ser.data)
        else:
            return Response(ser.errors)
# 4：修改一条数据
class ChangeOne:
    def put(self, request, pk):
        book = self.get_object()
        ser = self.get_serializer(instance=book, data=request.data)
        if ser.is_valid():
            ser.save()
            return Response(ser.data)
        else:
            return Response({'code': 100, 'msg': '修改成功'})
# 5：删除一条数据
class DeleteOne:
    def delete(self, request, pk):
        self.get_queryset().filter(pk=pk).delete()
        return Response('ok')

# 6：查看所有+增加一条
class GetAllandPost(CheckAll, AddOne):
    def __init__(self):
        super(CheckAll, self).__init__()
        super(AddOne, self).__init__()

# 7：查看一条+修改一条
class GetOneandPut(CheckOne, ChangeOne):
    def __init__(self):
        super(CheckOne, self).__init__()
        super(ChangeOne, self).__init__()

# 8：查看一条+删除一条
class GetOneandDelete(CheckOne, DeleteOne):
    def __init__(self):
        super(CheckOne, self).__init__()
        super(DeleteOne, self).__init__()
# 9：删除一条+修改一条
class DeleteandPut(DeleteOne, ChangeOne):
    def __init__(self):
        super(DeleteOne, self).__init__()
        super(DeleteOne, self).__init__()

# class BookView(GenericAPIView, CheckAll, AddOne):
#     queryset = Book.objects.all()
#     serializer_class = BookSerializer
#     def __init__(self):
#         super(CheckAll, self).__init__()
#         super(AddOne, self).__init__()


# class BookDetailView(GenericAPIView, CheckOne, ChangeOne, DeleteOne):
#     queryset = Book.objects.all()
#     serializer_class = BookSerializer
#     def __init__(self):
#         super(CheckOne, self).__init__()
#         super(ChangeOne, self).__init__()
#         super(DeleteOne, self).__init__()

class BookDetailView(GenericAPIView,GetOneandPut):
    queryset = Book.objects.all()
    serializer_class = BookSerializer
    def __init__(self):
        super(CheckOne, self).__init__()
        super(ChangeOne, self).__init__()
        
class BookView(GenericAPIView, GetAllandPost):
    queryset = Book.objects.all()
    serializer_class = BookSerializer
    def __init__(self):
        super(GetAllandPost, self).__init__()

方式二

class GetAll(GenericAPIView):
    def get(self, request):
        print(self.__dict__)
        queryset = self.get_queryset()
        ser = self.get_serializer(instance=queryset, many=True)
        return Response(ser.data)


class GetOne(GenericAPIView):
    def get(self, request, pk):
        obj = self.get_object()
        ser = self.get_serializer(instance=obj)
        return Response(ser.data)


class Create(GenericAPIView):
    def post(self, request):
        ser = self.get_serializer(data=request.data)
        if ser.is_valid():
            ser.save()
            return Response(ser.data)
        return Response(ser.errors)


class Alter(GenericAPIView):
    def put(self, request, pk):
        obj = self.get_object()
        ser = self.get_serializer(instance=obj, data=request.data)
        if ser.is_valid():
            ser.save()
            return Response(ser.data)
        return Response(ser.errors)


class Delete(GenericAPIView):
    def delete(self, request, pk):
        self.get_queryset().filter(pk=pk).delete()
        return Response()


class A(GetAll):
    pass


class B(Create):
    pass


class C(GetOne):
    pass


class D(Alter):
    pass


class E(Delete):
    pass


class F(GetAll, Create):
    pass


class G(GetOne, Alter):
    pass


class H(Alter, Delete):
    pass


class J(Delete):
    pass


class I(GetOne, Alter, Delete):
    pass


class BookView(A):
    queryset = Book.objects.all()
    serializer_class = BookSerializers


class Book2View(G):
    queryset = Book.objects.all()
    serializer_class = BookSerializers