django框架学习六：优化views.py文件，使用rest_framework中的APIVew和Response返回

from rest_framework import status
from rest_framework.views import APIView
from rest_framework.response import Response

from django.http import Http404

from .models import Projects
from .serializers import ProjectsModelSerializer


class ProjectsList(APIView):
    def get(self, request):
        projects = Projects.objects.all()
        serializer = ProjectsModelSerializer(projects, many=True)
        return Response(serializer.data, status=status.HTTP_200_OK)

    def post(self, request):
        serializer = ProjectsModelSerializer(data=request.data)
        try:
            serializer.is_valid(raise_exception=True)
        except Exception as e:
            return Response(serializer.errors)
        serializer.save()
        return Response(serializer.data, status=status.HTTP_201_CREATED)


class ProjectsDetail(APIView):
    def get_object(self, pk):
        try:
            return Projects.objects.get(id=pk)
        except Projects.DoesNotExist:
            raise Http404

    def get(self, request, pk):
        project = self.get_object(pk)
        serialzer = ProjectsModelSerializer(project)
        return Response(serialzer.data, status=status.HTTP_200_OK)

    def put(self, request, pk):
        project = self.get_object(pk)
        serialzer = ProjectsModelSerializer(instance=project, data=request.data)
        try:
            serialzer.is_valid(raise_exception=True)
        except:
            return Response(serialzer.errors)
        serialzer.save()
        return Response(serialzer.data, status=status.HTTP_201_CREATED)

    def delete(self, pk):
        project = self.get_object(pk)
        project.delete()
        return Response(None, status=status.HTTP_204_NO_CONTENT)