old_contents: from rest_framework.permissions import IsAuthenticated
  from rest_framework.response import Response
  from .serializers import ProductSerializer
  from ..models import Product
  from django.http import Http404
  from rest_framework.views import APIView
  
  
  class ProductDetail(APIView):
      permission_classes = (IsAuthenticated,)
      """
      Retrieve a product instance.
      """
      def get_object(self, slug):
          try:
              return Product.objects.get(code=slug)
          except Product.DoesNotExist:
              raise Http404
  
      def get(self, request, slug, format=None):
          snippet = self.get_object(slug)
          serializer = ProductSerializer(snippet)
          return Response(serializer.data)
  
new_contents: from rest_framework.permissions import IsAuthenticated
  from rest_framework.response import Response
  from .serializers import ProductSerializer
  from ..models import Product
  from django.http import Http404
  from rest_framework.views import APIView
  
  
  class ProductDetail(APIView):
      permission_classes = (IsAuthenticated,)
      """
      Retrieve a product instance.
      """
      def get_object(self, code):
          try:
              return Product.get_by_code(code=code)
          except Product.DoesNotExist:
              raise Http404
  
      def get(self, request, slug, format=None):
          snippet = self.get_object(slug)
          serializer = ProductSerializer(snippet)
          return Response(serializer.data)
  
subject: Use remote fallback for API request