起风网DRF中的Request
在Django REST Framework中内置的Request类扩展了Django中的Request类，实现了很多方便的功能–如请求数据解析和认证等。
比如，区别于Django中的request从request.GET中获取URL参数，从request.POST中取某些情况下的POST数据。
在APIView中封装的request，就实现了请求数据的解析：
对于GET请求的参数我们通过request.query_params来获取。
对于POST请求、PUT请求的数据我们通过request.data来获取。
前戏
葫芦娃的故事
#! /usr/bin/env python# -*- coding: utf-8 -*-# __author__ = "Q1mi"# Date: 2018/8/1class Wa1(object): name = "红娃" def f1(self): print("力大无穷！")class Wa2(object): name = '橙娃' def f2(self): print('千里眼顺风耳！')class Wa3(object): name = '黄娃' def f3(self): print('钢筋铁骨！')class Wa4(object): name = '绿娃' def f4(self): print("会喷火！")class Wa5(object): name = '青蛙' def f5(self): print("会喷水！")class Jishuwa(Wa1, Wa3, Wa5): name = '奇数娃' def ff(self): print("我是{}, 我会:".format(self.name)) self.f1() self.f3() self.f5()class Oushuwa(Wa2, Wa4): name = '偶数娃' def ff(self): print("我是{}, 我会:".format(self.name)) self.f2() self.f4()dbg = Jishuwa()dbg.ff()zhq = Oushuwa()zhq.ff()# 直接定义一个基数娃class Taowa(Wa1, Wa3, Wa5): name = '套娃' def ff(self): print("我是{}, 我会:".format(self.name)) self.f1() self.f3() self.f5()class Wawa(Taowa): passprint("=" * 120)a = Wawa()a.ff()
View Code
前提
序列化
from rest_framework import serializersfrom app01 import modelsclass CommentSerializer(serializers.ModelSerializer): class Meta: model = models.Comment fields = "__all__" extra_kwargs = { "content": {"error_messages": {"required": "评论内容不能为空"}}, "article": {"error_messages": {"required": "文章不能为空"}} }class SchoolSerializer(serializers.ModelSerializer): class Meta: model = models.School fields = "__all__"
初生牛犊之徒手垒代码阶段
视图
class SchoolView(APIView): def get(self, request, *args, **kwargs): query_set = models.School.objects.all() ser_obj = app01_serializers.SchoolSerializer(query_set, many=True) return Response(ser_obj.data)class SchoolDetail(APIView): def get(self, request, pk, *args, **kwargs): obj = models.School.objects.filter(pk=pk).first() ser_obj = app01_serializers.SchoolSerializer(obj) return Response(ser_obj.data)
小试牛刀之使用混合类阶段
视图
class SchoolView(GenericAPIView, mixins.ListModelMixin): queryset = models.School.objects.all() serializer_class = app01_serializers.SchoolSerializer def get(self, request, *args, **kwargs): return self.list(request, *args, **kwargs)class SchoolDetail(GenericAPIView, mixins.RetrieveModelMixin, mixins.CreateModelMixin): queryset = models.School.objects.all() serializer_class = app01_serializers.SchoolSerializer def get(self, request, pk, *args, **kwargs): return self.retrieve(request, pk, *args, **kwargs) def post(self, request, *args, **kwargs): return self.create(request, *args, **kwargs)
路由
url(r'school/$', views.SchoolView.as_view()),url(r'school/(?P<pk>\d+)/$', views.SchoolDetail.as_view()),
牛气冲天之使用通用类
视图
class SchoolView(ListCreateAPIView): queryset = models.School.objects.all() serializer_class = app01_serializers.SchoolSerializerclass SchoolDetail(RetrieveUpdateDestroyAPIView): queryset = models.School.objects.all() serializer_class = app01_serializers.SchoolSerializer
路由
同上
牛牛牛牛之使用视图集
视图
class SchoolView(ModelViewSet): queryset = models.School.objects.all() serializer_class = app01_serializers.SchoolSerializer
路由
url(r'school/$', views.SchoolView.as_view({ "get": "list", "post": "create",})),url(r'school/(?P<pk>\d+)/$', views.SchoolView.as_view({ 'get': 'retrieve', 'put': 'update', 'patch': 'partial_update', 'delete': 'destroy'})),
再来一牛之高级路由
视图
同上
路由
from rest_framework.routers import DefaultRouterrouter = DefaultRouter()router.register(r'school', views.SchoolView)urlpatterns += router.urls
赠图一张，祝君好运
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