补充：使用django的drf —— 继承ViewSetMixin的用法和好处

继承ViewSetMixin,它放在前面(好处,跟某个功能相关的,可以写在一起)，

这样写的好处，一个book可以响应两个get请求

from rest_framework.views import APIView
from rest_framework.viewsets import ViewSetMixin
from app01 import models
from app01 import MySer
from rest_framework.response import Response


class Book(ViewSetMixin, APIView):
    def get_all(self, request):
        # 过滤条件，从GET中取出来
        response = {'status': 100, 'msg': '查询成功'}
        book_list = models.Book.objects.all()
        # 这个是序列化数据
        ser = MySer.BookSerializers(instance=book_list, many=True)
        # 如果是校验数据要传request.data,也就是从前台传过来的数据，不能按位置传参，需要按照关键字传参data=request.data
        response['data'] = ser.data
        return Response(response)

    def get_one(self, request, pk):
        response = {'status': 100, 'msg': '查询成功'}
        book = models.Book.objects.all().filter(pk=pk).first()
        if book:
            ser = MySer.BookSerializers(instance=book, many=False)
            response['data'] = ser.data
        else:
            response['status'] = 101
            response['msg'] = '您要查询的数据不存在'
        return Response(response)

from app01 import models
from rest_framework import serializers


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

from django.db import models


class Book(models.Model):
    nid = models.AutoField(primary_key=True)
    name = models.CharField(max_length=32)
    price = models.CharField(max_length=32)

    def __str__(self):
        return self.name

from django.conf.urls import url,include
from django.contrib import admin
from app01 import views
from rest_framework import routers
# # 实例化产生一个对象
# router=routers.DefaultRouter()
# router.register('^books',views.Book)
urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^books/$', views.Book.as_view({'get':'get_all'})),
    url(r'^books/(?P<pk>d+)', views.Book.as_view({'get':'get_one'})),
    # url('', include(router.urls)),

这种方法可以快速写出5个接口

from rest_framework.viewsets import ModelViewSet

-继承它ModelViewSet
-写一个视图类,视图类中定义两个变量
class Book(ModelViewSet):
    queryset = models.Book.objects.all()
    serializer_class = MySer.BookSerializers

-路由:(两条路由)：
url(r'^publish', views.PublishView.as_view({'get': 'list', 'post': 'create'})),
url(r'^publish/(?P<pk>d+)', views.PublishView.as_view({'get': 'retrieve', 'put': 'update','delete':'destroy'})),

响应器:(一般不需要配置)
-返回用Response

url控制:
三种:
-最原始的
-半自动(必须继承ViewSetMixin)
-url(r'^books/$', views.Book.as_view({'get':'get_all'})),
-全自动(自动生成路由,必须继承自ModelViewSet)(不建议用)