rest_framework,示例题

在day95文件夹中：还有部分文件没有写入

1，urls.py(中写入):

from django.conf.urls import url,include
from django.contrib import admin
from app01 import app01_urls

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'api/',include(app01_urls))
]








2，app01_urls.py(中写入)：

from django.conf.urls import url
from app01 import views


urlpatterns = [
    url(r'^article/$',views.Article.as_view()),
    url(r'article/(?P<pk>d+)',views.ArticleDetail.as_view(),name='article-detail'),
    url(r'school/(?P<id>d+)',views.SchoolDetail.as_view(),name='school-detail'),
    url(r'comment/',views.Comment.as_view()),
    # url(r'comment2/$',views.CommentViewSet.as_view({
    #     'get':'list',
    #     'post':'create'
    # })),
    # url(r'comment2/(?P<pk>d+)',views.CommentViewSet.as_view({
    #     'get':'retrieve',
    #     'put':'update',
    #     'delete':'destroy'
    # })),
]


from rest_framework.routers import DefaultRouter

router = DefaultRouter()
router.register(r'comment2', views.CommentViewSet)
urlpatterns += router.urls












3，views.py(中写入)：

from django.shortcuts import render,HttpResponse
from django.http import JsonResponse
from app01 import models
from rest_framework import serializers
from django import views
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework.viewsets import ModelViewSet
from app01 import serializers as app01_serializers
from rest_framework.generics import GenericAPIView,RetrieveUpdateDestroyAPIView,ListCreateAPIView
from rest_framework.mixins import ListModelMixin,CreateModelMixin,RetrieveModelMixin,DestroyModelMixin,UpdateModelMixin

# Create your views here.
class Comment(APIView):


    def get(self,request):
        print(request.data)
        res = {'code':0}
        # print('111')
        all_comment = models.Comment.objects.all()
        ser_obj = app01_serializers.CommentSerializer(all_comment,many=True)
        # print(ser_obj)
        res['data'] = ser_obj.data
        # print('2222')
        return Response(res)

    def post(self,request):
        res = {'code':0}
        comment_data = self.request.data
        ser_obj = app01_serializers.CommentSerializer(data=comment_data)
        if ser_obj.is_valid():
            ser_obj.save()
        else:
            res['code'] = 1
            res['error'] = ser_obj.errors
        return Response(res)

        # return HttpResponse('创建新评论')
    def put(self,request):
        print(self.request)
        print(self.request.data)
        return HttpResponse('修改评论')

    def delete(self,request):
        print(self.request)
        print(self.request.data)
        return HttpResponse('删除评论')

class Article(APIView):
    def get(self,request):
        res = {'code':0}
        all_article = models.Article.objects.all()
        ser_obj = app01_serializers.ArticleHyperLinkedSerializer(all_article,many=True,context={'request':request})
        res['data'] = ser_obj.data
        return Response(res)

    def post(self,request):
        res = {'code':0}
        ser_obj = app01_serializers.ArticleModelSerializer(data=self.request.data)
        if ser_obj.is_valid():
            ser_obj.save()
        else:
            res['code'] = 1
            res['error'] = ser_obj.errors
        return Response(res)

class ArticleDetail(APIView):
    def get(self,request,pk):
        res = {'code':0}
        print('1111')
        article_obj = models.Article.objects.filter(pk = pk).first()

        ser_obj = app01_serializers.ArticleHyperLinkedSerializer(article_obj,context={'request':request})
        res['data'] = ser_obj.data
        return Response(res)

class SchoolDetail(APIView):
    def get(self,request,id):
        res = {'code':0}
        school_obj = models.School.objects.filter(pk=id).first()
        ser_obj = app01_serializers.SchoolSerializer(school_obj,context={'request':request})
        res['data'] = ser_obj.data
        return Response(res)

# class CommentView(APIView):
#     def get(self,request):
#         query_set = models.Comment.objects.all()
#         ser_obj = app01_serializers.CommentSerializer(query_set,many=True)
#         return Response(ser_obj.data)


# class CommentView(GenericAPIView,ListModelMixin,CreateModelMixin):
#     queryset = models.Comment.objects.all()
#     serializer_class = app01_serializers.CommentSerializer
#
#     def get(self,request,*args,**kwargs):
#         return self.list(request,*args,**kwargs)
#
#     def post(self,request,*args,**kwargs):
#         print('要添加评论了')
#         return self.create(request,*args,**kwargs)

# class CommentDetailView(GenericAPIView,RetrieveModelMixin,DestroyModelMixin,UpdateModelMixin):
#     queryset = models.Comment.objects.all()
#     serializer_class = app01_serializers.CommentSerializer
#
#     def get(self,request,pk):
#         return self.retrieve(request,pk)
#
#     def delete(self,request,pk):
#         return self.destroy(request,pk)
#
#     def perform_destroy(self, instance):
#         print('删除了。。。')
#         instance.delete()
#
#     def put(self,request,pk):
#         return self.update(request,pk)
# class CommentDetailView(RetrieveUpdateDestroyAPIView):
#     queryset = models.Comment.objects.all()
#     serializer_class = app01_serializers.CommentSerializer
#
#
# class CommentView(ListCreateAPIView):
#     queryset = models.Comment.objects.all()
#     serializer_class = app01_serializers.CommentSerializer


class CommentViewSet(ModelViewSet):
    queryset = models.Comment.objects.all()
    serializer_class = app01_serializers.CommentSerializer











4，serializers.py（中写入）：

from app01.models import Comment,Article,School
from rest_framework import serializers
from rest_framework.validators import ValidationError


class CommentSerializer(serializers.ModelSerializer):


    def validate_content(self,value):
        if '坏' in value:
            raise ValidationError('非法字符！')
        else:
            return value

    class Meta:
        model = Comment
        fields = '__all__'
        extra_kwargs = {
            'content':{
                'error_messages':{
                    'required':'内容不能为空',
                }
            },
            'article':{
                'error_messages':{
                    'required':'文章不能为空'
                }
            }
        }





class ArticleModelSerializer(serializers.ModelSerializer):
    class Meta:
        model = Article
        fields = '__all__'



class ArticleHyperLinkedSerializer(serializers.HyperlinkedModelSerializer):
    school = serializers.HyperlinkedIdentityField(view_name='school-detail',lookup_url_kwarg='id')
        # 路径拼接，
    class Meta:
        model = Article
        fields = ['id','title','type','school']


class SchoolSerializer(serializers.ModelSerializer):
    class Meta:
        model = School
        fields = '__all__'








5，