learn viedo delete and add permison

backend/home/admin.py

@@ -10,6 +10,9 @@ from unfold.decorators import action, display
 from django.utils.html import format_html
 from unfold.decorators import display
 from utils.admin import ModelAdmin
+from unfold.contrib.filters.admin import ChoicesDropdownFilter
+
+
 @admin.register(ShowCaseSlider)
 class ShowCaseSliderAdmin(ModelAdmin, ImportExportModelAdmin):
     import_form_class = ImportForm
@@ -28,16 +31,23 @@ class ShowCaseSliderAdmin(ModelAdmin, ImportExportModelAdmin):
 @admin.register(LearnVideoModel)
 class LearnVideoAdmin(UnfoldModelAdmin):
     list_display = ['title', 'section', 'display_viewd']
-    search_fields = ['title', 'section']
+    search_fields = ['title', 'section', 'content_type__app_label']
+    # autocomplete_fields = ['section']
     compressed_fields = False
-    list_filter = ['section']
+    list_filter = ['viewd', 'section']
     warn_unsaved_form = True
+    list_filter_submit = True
     change_form_template = 'video_change_form_after.html'
     formfield_overrides = {
         ArrayField: {
             "widget": ArrayWidget,
         }
     }
+    def has_delete_permission(self, request, obj=None):
+        return request.user.video_uploader
+
+    def has_add_permission(self, request, obj=None):
+        return request.user.video_uploader
 
 
     @display(description='دیده شده')

backend/order/views.py

@@ -29,22 +29,23 @@ class CartItemViews(APIView):
     serializer_class = OrderItemSerailzier
     def post(self, request, pk):
         product_variant = get_object_or_404(ProductVariant, pk=pk)
+        response = 'محصول با موفقیت به سبد خرید اضافه شد'
+        quantity = request.data.get('quantity', 1)
+        if product_variant.in_stock < quantity:
+            quantity = product_variant.in_stock
+            response = 'تعداد درخواستی بیشتر از موجودی محصول میباشد'
 
-        cart_order, created = OrderModel.objects.get_or_create(
-            user=request.user,
-            status='CART'
-        )
-        order_item, created = OrderItemModel.objects.get_or_create(
-            order=cart_order,
-            product=product_variant,
-            defaults={'quantity': request.data.get('quantity', 1)}
-        )
+        cart_order, created = OrderModel.objects.get_or_create(user=request.user, status='CART')
+        order_item, created = OrderItemModel.objects.get_or_create(order=cart_order, product=product_variant, defaults={'quantity': quantity})
 
-        if not created:  
-            order_item.quantity = request.data.get('quantity', 1)
+        if not created and order_item.quantity:  
+            order_item.quantity = quantity
             order_item.save()
-
-        return Response({'detail': f'تعداد ایتم {product_variant.product.name} به {request.data.get('quantity', 1)} تغییر کرد'}, status=status.HTTP_202_ACCEPTED)
+        if not order_item.quantity:
+            order_item.delete()
+        return Response({'detail': response, 'count': quantity}, status=status.HTTP_202_ACCEPTED)
+    
+    
     def delete(self, request, pk):
         product_variant = get_object_or_404(ProductVariant, pk=pk)