update product.view of product

backend/product/views.py

@@ -141,6 +141,8 @@ class ProductView(APIView):
         },
     )
     def get(self, request, slug):
+        from django.db.models import F
+        
         # Optimize query with select_related and prefetch_related to avoid N+1 queries
         product = get_object_or_404(
             ProductModel.objects.select_related(
@@ -158,6 +160,10 @@ class ProductView(APIView):
             slug=slug
         )
 
+        # Increment product view count atomically using F expressions to avoid race conditions
+        ProductModel.objects.filter(id=product.id).update(view=F('view') + 1)
+        product.view += 1  # Update in-memory instance for response
+
         if request.user.is_authenticated:
             cart_obj, _ = Cart.objects.get_or_create(user=request.user)
             # Optimize cart items query - prefetch all related data