DRF 视图
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()
前提
序列化
from rest_framework import serializers
from app01 import modelsclass CommentSerializer(serializers.ModelSerializer):class Meta:model = models.Commentfields = "__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.Schoolfields = "__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.SchoolSerializerdef 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.SchoolSerializerdef 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
