style(ui): increase toast notification delay from 3 to 5 seconds

Add toast notification functionality using Bootstrap Toasts and update
checkout success/error handling to use toast messages instead of alert boxes.

**Changes:**
- Add `showToast` function to `terminal.js`
- Add toast container and templates to `terminal.html`
- Replace alert() calls in handleCheckoutSubmit with showToast()

myproject/inventory/services/showcase_manager.py

@@ -162,8 +162,6 @@ class ShowcaseManager:
         Raises:
             IntegrityError: если экземпляр уже был продан (защита на уровне БД)
         """
-        from inventory.services.sale_processor import SaleProcessor
-
         sold_count = 0
         order = order_item.order
 
@@ -207,17 +205,9 @@ class ShowcaseManager:
                         
                         # Сначала устанавливаем order_item для правильного определения цены
                         reservation.order_item = order_item
-                        reservation.save()
+                        # ВАЖНО: Мы НЕ создаём продажу (Sale) здесь и НЕ меняем статус на 'converted_to_sale'.
-                        
+                        # Это сделает сигнал create_sale_on_order_completion автоматически.
-                        # Теперь создаём продажу с правильной ценой из OrderItem
+                        # Таким образом обеспечивается единая точка создания продаж для всех типов товаров.
-                        SaleProcessor.create_sale_from_reservation(
-                            reservation=reservation,
-                            order=order
-                        )
-                        
-                        # Обновляем статус резерва
-                        reservation.status = 'converted_to_sale'
-                        reservation.converted_at = timezone.now()
                         reservation.save()
 
                     sold_count += 1

myproject/inventory/signals.py

@@ -366,7 +366,7 @@ def create_sale_on_order_completion(sender, instance, created, **kwargs):
     # === ЗАЩИТА ОТ ПРЕЖДЕВРЕМЕННОГО СОЗДАНИЯ SALE ===
     # Проверяем, есть ли уже Sale для этого заказа
     if Sale.objects.filter(order=instance).exists():
-        logger.info(f"✓ Заказ {instance.order_number}: Sale уже существуют, пропускаем")
+        logger.info(f"Заказ {instance.order_number}: Sale уже существуют, пропускаем")
         update_is_returned_flag(instance)
         return
 
@@ -376,7 +376,7 @@ def create_sale_on_order_completion(sender, instance, created, **kwargs):
     previous_status = getattr(instance, '_previous_status', None)
     if previous_status and previous_status.is_positive_end:
         logger.info(
-            f"🔄 Заказ {instance.order_number}: повторный переход в положительный статус "
+            f"Заказ {instance.order_number}: повторный переход в положительный статус "
             f"({previous_status.name} → {instance.status.name}). Проверяем Sale..."
         )
         if Sale.objects.filter(order=instance).exists():
@@ -454,12 +454,65 @@ def create_sale_on_order_completion(sender, instance, created, **kwargs):
                     )
                 continue
             
+            # === РАСЧЕТ ЦЕНЫ ===
+            # Рассчитываем фактическую стоимость продажи всего комплекта с учетом скидок
+            # 1. Базовая стоимость позиции
+            item_subtotal = Decimal(str(item.price)) * Decimal(str(item.quantity))
+
+            # 2. Скидки
+            item_discount = Decimal(str(item.discount_amount)) if item.discount_amount is not None else Decimal('0')
+            
+            # Скидка на заказ (распределенная)
+            instance.refresh_from_db()
+            order_total = instance.subtotal if hasattr(instance, 'subtotal') else Decimal('0')
+            delivery_cost = Decimal(str(instance.delivery.cost)) if hasattr(instance, 'delivery') and instance.delivery else Decimal('0')
+            order_discount_amount = (order_total - (Decimal(str(instance.total_amount)) - delivery_cost)) if order_total > 0 else Decimal('0')
+
+            if order_total > 0 and order_discount_amount > 0:
+                item_order_discount = order_discount_amount * (item_subtotal / order_total)
+            else:
+                item_order_discount = Decimal('0')
+
+            kit_net_total = item_subtotal - item_discount - item_order_discount
+            if kit_net_total < 0:
+                kit_net_total = Decimal('0')
+
+            # 3. Суммарная каталожная стоимость всех компонентов (для пропорции)
+            total_catalog_price = Decimal('0')
+            for reservation in kit_reservations:
+                qty = reservation.quantity_base or reservation.quantity
+                price = reservation.product.actual_price or Decimal('0')
+                total_catalog_price += price * qty
+            
+            # 4. Коэффициент распределения
+            if total_catalog_price > 0:
+                ratio = kit_net_total / total_catalog_price
+            else:
+                # Если каталожная цена 0, распределяем просто по количеству или 0
+                ratio = Decimal('0')
+
             # Создаем Sale для каждого компонента комплекта
             for reservation in kit_reservations:
                 try:
-                    # Рассчитываем цену продажи компонента пропорционально цене комплекта
+                    # Рассчитываем цену продажи компонента пропорционально
-                    # Используем actual_price компонента как цену продажи
+                    catalog_price = reservation.product.actual_price or Decimal('0')
-                    component_sale_price = reservation.product.actual_price
+                    
+                    if ratio > 0:
+                        # Распределяем реальную выручку
+                        component_sale_price = catalog_price * ratio
+                    else:
+                        # Если выручка 0 или каталожные цены 0
+                        if total_catalog_price == 0 and kit_net_total > 0:
+                             # Крайний случай: товаров на 0 руб, а продали за деньги (услуга?)
+                             # Распределяем равномерно
+                             count = kit_reservations.count()
+                             component_qty = reservation.quantity_base or reservation.quantity
+                             if count > 0 and component_qty > 0:
+                                component_sale_price = (kit_net_total / count) / component_qty
+                             else:
+                                component_sale_price = Decimal('0')
+                        else:
+                             component_sale_price = Decimal('0')
 
                     sale = SaleProcessor.create_sale(
                         product=reservation.product,
@@ -472,7 +525,8 @@ def create_sale_on_order_completion(sender, instance, created, **kwargs):
                     sales_created.append(sale)
                     logger.info(
                         f"✓ Sale создан для компонента комплекта '{kit.name}': "
-                        f"{reservation.product.name} - {reservation.quantity_base or reservation.quantity} шт. (базовых единиц)"
+                        f"{reservation.product.name} - {reservation.quantity_base or reservation.quantity} шт. "
+                        f"(цена: {component_sale_price})"
                     )
                 except ValueError as e:
                     logger.error(
@@ -548,6 +602,21 @@ def create_sale_on_order_completion(sender, instance, created, **kwargs):
             else:
                 base_price = price_with_discount
 
+            # LOGGING DEBUG INFO
+            # print(f"DEBUG SALE PRICE CALCULATION for Item #{item.id} ({product.name}):")
+            # print(f"  Price: {item.price}, Qty: {item.quantity}, Subtotal: {item_subtotal}")
+            # print(f"  Item Discount: {item_discount}, Order Discount Share: {item_order_discount}, Total Discount: {total_discount}")
+            # print(f"  Price w/ Discount: {price_with_discount}")
+            # print(f"  Sales Unit: {item.sales_unit}, Conversion: {item.conversion_factor_snapshot}")
+            # print(f"  FINAL BASE PRICE: {base_price}")
+            # print(f"  Sales Unit Object: {item.sales_unit}")
+            # if item.sales_unit:
+            #     print(f"    Sales Unit Conversion: {item.sales_unit.conversion_factor}")
+            
+            logger.info(f"DEBUG SALE PRICE CALCULATION for Item #{item.id} ({product.name}):")
+            logger.info(f"  Price: {item.price}, Qty: {item.quantity}, Subtotal: {item_subtotal}")
+            logger.info(f"  FINAL BASE PRICE: {base_price}")
+
             # Создаем Sale (с автоматическим FIFO-списанием)
             sale = SaleProcessor.create_sale(
                 product=product,

myproject/inventory/templates/inventory/transfer/transfer_detail.html

@@ -74,10 +74,12 @@
                                 {% for item in items %}
                                 <tr>
                                     <td class="px-3 py-2">
-                                        <a href="{% url 'products:product-detail' item.product.id %}">{{ item.product.name }}</a>
+                                        <a href="{% url 'products:product-detail' item.product.id %}">{{
+                                            item.product.name }}</a>
                                     </td>
                                     <td class="px-3 py-2" style="text-align: right;">{{ item.quantity }}</td>
-                                    <td class="px-3 py-2" style="text-align: right;">{{ item.batch.cost_price }} ₽/ед.</td>
+                                    <td class="px-3 py-2" style="text-align: right;">{{ item.batch.cost_price }} ₽/ед.
+                                    </td>
                                     <td class="px-3 py-2">
                                         <span class="badge bg-secondary">{{ item.batch.id }}</span>
                                     </td>
@@ -132,9 +134,11 @@
                         <a href="{% url 'inventory:transfer-list' %}" class="btn btn-outline-secondary btn-sm">
                             <i class="bi bi-arrow-left me-1"></i>Вернуться к списку
                         </a>
+                        <!--
                         <a href="{% url 'inventory:transfer-delete' transfer_document.id %}" class="btn btn-outline-danger btn-sm">
                             <i class="bi bi-trash me-1"></i>Удалить
                         </a>
+                        -->
                     </div>
                 </div>
             </div>

myproject/inventory/templates/inventory/transfer/transfer_list.html

@@ -39,9 +39,11 @@
                             <a href="{% url 'inventory:transfer-detail' t.pk %}" class="btn btn-sm btn-outline-info" title="Просмотр">
                                 <i class="bi bi-eye"></i>
                             </a>
+                            <!--
                             <a href="{% url 'inventory:transfer-delete' t.pk %}" class="btn btn-sm btn-outline-danger" title="Удалить">
                                 <i class="bi bi-trash"></i>
                             </a>
+                            -->
                         </td>
                     </tr>
                     {% endfor %}

myproject/myproject/settings.py

@@ -631,3 +631,5 @@ if not DEBUG and not ENCRYPTION_KEY:
         "ENCRYPTION_KEY not set! Encrypted fields will fail. "
         "Generate with: python -c \"from cryptography.fernet import Fernet; print(Fernet.generate_key().decode())\""
     )
+
+

myproject/pos/static/pos/js/terminal.js

@@ -12,6 +12,38 @@ function roundQuantity(value, decimals = 3) {
   return Math.round(value * Math.pow(10, decimals)) / Math.pow(10, decimals);
 }
 
+/**
+ * Показывает toast уведомление в правом верхнем углу
+ * @param {string} type - 'success' или 'error'
+ * @param {string} message - Текст сообщения
+ */
+function showToast(type, message) {
+  const toastId = type === 'success' ? 'orderSuccessToast' : 'orderErrorToast';
+  const messageId = type === 'success' ? 'toastMessage' : 'errorMessage';
+  const bgClass = type === 'success' ? 'bg-success' : 'bg-danger';
+
+  const toastElement = document.getElementById(toastId);
+  const messageElement = document.getElementById(messageId);
+
+  // Устанавливаем сообщение
+  messageElement.textContent = message;
+
+  // Добавляем цвет фона
+  toastElement.classList.add(bgClass, 'text-white');
+
+  // Создаём и показываем toast (автоматически скроется через 5 секунд - стандарт Bootstrap)
+  const toast = new bootstrap.Toast(toastElement, {
+    delay: 5000,
+    autohide: true
+  });
+  toast.show();
+
+  // Убираем класс цвета после скрытия
+  toastElement.addEventListener('hidden.bs.toast', () => {
+    toastElement.classList.remove(bgClass, 'text-white');
+  }, { once: true });
+}
+
 const CATEGORIES = JSON.parse(document.getElementById('categoriesData').textContent);
 let ITEMS = [];  // Будем загружать через API
 let showcaseKits = JSON.parse(document.getElementById('showcaseKitsData').textContent);
@@ -2388,10 +2420,9 @@ document.getElementById('confirmCreateTempKit').onclick = async () => {
   formData.append('items', JSON.stringify(items));
   formData.append('price_adjustment_type', priceAdjustmentType);
   formData.append('price_adjustment_value', priceAdjustmentValue);
-  // Если пользователь не задал свою цену, используем вычисленную
+  // Если пользователь явно указал свою цену
-  const finalSalePrice = useSalePrice ? salePrice : calculatedPrice;
+  if (useSalePrice && salePrice > 0) {
-  if (finalSalePrice > 0) {
+    formData.append('sale_price', salePrice);
-    formData.append('sale_price', finalSalePrice);
   }
 
   // Фото: для редактирования проверяем, удалено ли оно
@@ -3416,8 +3447,8 @@ async function handleCheckoutSubmit(paymentsData) {
     if (result.success) {
       console.log('✅ Заказ успешно создан:', result);
 
-      // Успех
+      // Показываем toast уведомление
-      alert(`Заказ #${result.order_number} успешно создан!\nСумма: ${result.total_amount.toFixed(2)} руб.`);
+      showToast('success', `Заказ #${result.order_number} успешно создан! Сумма: ${result.total_amount.toFixed(2)} руб.`);
 
       // Очищаем корзину
       cart.clear();
@@ -3438,12 +3469,12 @@ async function handleCheckoutSubmit(paymentsData) {
       }, 500);
 
     } else {
-      alert('Ошибка: ' + result.error);
+      showToast('error', 'Ошибка: ' + result.error);
     }
 
   } catch (error) {
     console.error('Ошибка checkout:', error);
-    alert('Ошибка при проведении продажи: ' + error.message);
+    showToast('error', 'Ошибка при проведении продажи: ' + error.message);
   } finally {
     // Разблокируем кнопку
     const btn = document.getElementById('confirmCheckoutBtn');

myproject/pos/templates/pos/terminal.html

@@ -729,6 +729,28 @@
 
 <!-- Модалка редактирования товара в корзине -->
 {% include 'pos/components/edit_cart_item_modal.html' %}
+
+<!-- Toast Container для уведомлений -->
+<div class="toast-container position-fixed top-0 end-0 p-3" style="z-index: 1060;">
+  <div id="orderSuccessToast" class="toast align-items-center border-0" role="alert" aria-live="assertive" aria-atomic="true">
+    <div class="d-flex">
+      <div class="toast-body">
+        <i class="bi bi-check-circle-fill text-success me-2 fs-5"></i>
+        <span id="toastMessage"></span>
+      </div>
+      <button type="button" class="btn-close btn-close-white me-2 m-auto" data-bs-dismiss="toast" aria-label="Close" style="display: none;"></button>
+    </div>
+  </div>
+
+  <div id="orderErrorToast" class="toast align-items-center border-0" role="alert" aria-live="assertive" aria-atomic="true">
+    <div class="d-flex">
+      <div class="toast-body">
+        <i class="bi bi-exclamation-circle-fill text-danger me-2 fs-5"></i>
+        <span id="errorMessage"></span>
+      </div>
+    </div>
+  </div>
+</div>
 {% endblock %}
 
 {% block extra_js %}

myproject/products/models/kits.py

@@ -340,17 +340,6 @@ class ProductKit(BaseProductEntity):
         self.save(update_fields=['is_temporary', 'order'])
         return True
 
-    def delete(self, *args, **kwargs):
-        """Soft delete вместо hard delete - марк как удаленный"""
-        self.is_deleted = True
-        self.deleted_at = timezone.now()
-        self.save(update_fields=['is_deleted', 'deleted_at'])
-        return 1, {self.__class__._meta.label: 1}
-
-    def hard_delete(self):
-        """Полное удаление из БД (необратимо!)"""
-        super().delete()
-
     def create_snapshot(self):
         """
         Создает снимок текущего состояния комплекта.

myproject/products/templates/products/productkit_create.html

@@ -76,7 +76,8 @@
                         </div>
 
                         <!-- Загрузка с устройства -->
-                        <input type="file" name="photos" accept="image/*" multiple class="form-control form-control-sm" id="id_photos">
+                        <input type="file" name="photos" accept="image/*" multiple class="form-control form-control-sm"
+                            id="id_photos">
                         <div id="photoPreviewContainer" class="mt-2" style="display: none;">
                             <div id="photoPreview" class="row g-1"></div>
                         </div>
@@ -97,7 +98,8 @@
                         <div class="card-body p-3">
                             <p class="small text-muted mb-3">
                                 Сгенерируйте привлекательное название для вашего букета автоматически
-                            <br><span class="badge bg-secondary mt-1">В базе: <span id="bouquetNamesCount">{{ bouquet_names_count }}</span> названий</span>
+                                <br><span class="badge bg-secondary mt-1">В базе: <span id="bouquetNamesCount">{{
+                                        bouquet_names_count }}</span> названий</span>
                             </p>
                             <div class="d-flex gap-2 mb-4">
                                 <button type="button" class="btn btn-outline-primary btn-sm" id="populateNamesBtn">
@@ -111,27 +113,36 @@
                             <!-- Предложения названий -->
                             <div class="name-suggestions">
                                 <!-- Строка 1 -->
-                                <div class="d-flex justify-content-between align-items-center py-2 border-bottom name-row" data-name-id="">
+                                <div class="d-flex justify-content-between align-items-center py-2 border-bottom name-row"
+                                    data-name-id="">
                                     <span class="text-muted small name-text">-</span>
                                     <div class="d-flex gap-1 name-buttons" style="display: none;">
-                                        <button type="button" class="btn btn-success btn-xs btn-take-name">Взять</button>
+                                        <button type="button"
-                                        <button type="button" class="btn btn-outline-danger btn-xs btn-delete-name">Удалить</button>
+                                            class="btn btn-success btn-xs btn-take-name">Взять</button>
+                                        <button type="button"
+                                            class="btn btn-outline-danger btn-xs btn-delete-name">Удалить</button>
                                     </div>
                                 </div>
                                 <!-- Строка 2 -->
-                                <div class="d-flex justify-content-between align-items-center py-2 border-bottom name-row" data-name-id="">
+                                <div class="d-flex justify-content-between align-items-center py-2 border-bottom name-row"
+                                    data-name-id="">
                                     <span class="text-muted small name-text">-</span>
                                     <div class="d-flex gap-1 name-buttons" style="display: none;">
-                                        <button type="button" class="btn btn-success btn-xs btn-take-name">Взять</button>
+                                        <button type="button"
-                                        <button type="button" class="btn btn-outline-danger btn-xs btn-delete-name">Удалить</button>
+                                            class="btn btn-success btn-xs btn-take-name">Взять</button>
+                                        <button type="button"
+                                            class="btn btn-outline-danger btn-xs btn-delete-name">Удалить</button>
                                     </div>
                                 </div>
                                 <!-- Строка 3 -->
-                                <div class="d-flex justify-content-between align-items-center py-2 name-row" data-name-id="">
+                                <div class="d-flex justify-content-between align-items-center py-2 name-row"
+                                    data-name-id="">
                                     <span class="text-muted small name-text">-</span>
                                     <div class="d-flex gap-1 name-buttons" style="display: none;">
-                                        <button type="button" class="btn btn-success btn-xs btn-take-name">Взять</button>
+                                        <button type="button"
-                                        <button type="button" class="btn btn-outline-danger btn-xs btn-delete-name">Удалить</button>
+                                            class="btn btn-success btn-xs btn-take-name">Взять</button>
+                                        <button type="button"
+                                            class="btn btn-outline-danger btn-xs btn-delete-name">Удалить</button>
                                     </div>
                                 </div>
                             </div>
@@ -154,8 +165,10 @@
                         <!-- Базовая цена (отображение) -->
                         <div class="mb-3 p-2 rounded" style="background: #f8f9fa; border-left: 3px solid #6c757d;">
                             <div class="d-flex justify-content-between align-items-center">
-                                <span class="text-muted small"><i class="bi bi-calculator"></i> Сумма цен компонентов:</span>
+                                <span class="text-muted small"><i class="bi bi-calculator"></i> Сумма цен
-                                <span id="basePriceDisplay" class="fw-semibold" style="font-size: 1.1rem;">0.00 руб.</span>
+                                    компонентов:</span>
+                                <span id="basePriceDisplay" class="fw-semibold" style="font-size: 1.1rem;">0.00
+                                    руб.</span>
                             </div>
                         </div>
 
@@ -169,13 +182,15 @@
                             <div class="row g-2">
                                 <div class="col-6">
                                     <div class="input-group input-group-sm">
-                                        <input type="number" id="id_increase_percent" class="form-control" placeholder="%" step="0.01" min="0">
+                                        <input type="number" id="id_increase_percent" class="form-control"
+                                            placeholder="%" step="0.01" min="0">
                                         <span class="input-group-text">%</span>
                                     </div>
                                 </div>
                                 <div class="col-6">
                                     <div class="input-group input-group-sm">
-                                        <input type="number" id="id_increase_amount" class="form-control" placeholder="руб" step="0.01" min="0">
+                                        <input type="number" id="id_increase_amount" class="form-control"
+                                            placeholder="руб" step="0.01" min="0">
                                         <span class="input-group-text">руб</span>
                                     </div>
                                 </div>
@@ -191,13 +206,15 @@
                             <div class="row g-2">
                                 <div class="col-6">
                                     <div class="input-group input-group-sm">
-                                        <input type="number" id="id_decrease_percent" class="form-control" placeholder="%" step="0.01" min="0">
+                                        <input type="number" id="id_decrease_percent" class="form-control"
+                                            placeholder="%" step="0.01" min="0">
                                         <span class="input-group-text">%</span>
                                     </div>
                                 </div>
                                 <div class="col-6">
                                     <div class="input-group input-group-sm">
-                                        <input type="number" id="id_decrease_amount" class="form-control" placeholder="руб" step="0.01" min="0">
+                                        <input type="number" id="id_decrease_amount" class="form-control"
+                                            placeholder="руб" step="0.01" min="0">
                                         <span class="input-group-text">руб</span>
                                     </div>
                                 </div>
@@ -210,8 +227,10 @@
                         <!-- Итоговая цена -->
                         <div class="p-2 rounded" style="background: #e7f5e7; border-left: 3px solid #198754;">
                             <div class="d-flex justify-content-between align-items-center">
-                                <span class="text-dark small"><i class="bi bi-check-circle me-1"></i><strong>Итоговая цена:</strong></span>
+                                <span class="text-dark small"><i class="bi bi-check-circle me-1"></i><strong>Итоговая
-                                <span id="finalPriceDisplay" class="fw-bold" style="font-size: 1.3rem; color: #198754;">0.00 руб.</span>
+                                        цена:</strong></span>
+                                <span id="finalPriceDisplay" class="fw-bold"
+                                    style="font-size: 1.3rem; color: #198754;">0.00 руб.</span>
                             </div>
                         </div>
 
@@ -227,7 +246,8 @@
                         <h6 class="mb-2 text-muted"><i class="bi bi-tag-discount"></i> Цена со скидкой</h6>
                         <label class="form-label small mb-1">{{ form.sale_price.label }}</label>
                         {{ form.sale_price }}
-                        <small class="form-text text-muted">Если указана, будет использоваться вместо расчетной цены</small>
+                        <small class="form-text text-muted">Если указана, будет использоваться вместо расчетной
+                            цены</small>
                         {% if form.sale_price.errors %}
                         <div class="text-danger small mt-1">{{ form.sale_price.errors }}</div>
                         {% endif %}
@@ -296,7 +316,8 @@
         </div>
 
         <!-- Sticky Footer -->
-        <div class="sticky-bottom bg-white border-top mt-4 p-3 d-flex justify-content-between align-items-center shadow-sm">
+        <div
+            class="sticky-bottom bg-white border-top mt-4 p-3 d-flex justify-content-between align-items-center shadow-sm">
             <a href="{% url 'products:products-list' %}" class="btn btn-outline-secondary">
                 Отмена
             </a>
@@ -425,6 +446,7 @@
             opacity: 0;
             transform: translateY(-10px);
         }
+
         to {
             opacity: 1;
             transform: translateY(0);
@@ -528,7 +550,9 @@
 
     /* Адаптивность */
     @media (max-width: 991px) {
-    .col-lg-8, .col-lg-4 {
+
+        .col-lg-8,
+        .col-lg-4 {
             max-width: 100%;
         }
     }
@@ -537,6 +561,10 @@
 <!-- Select2 инициализация -->
 {% include 'products/includes/select2-product-init.html' %}
 
+{{ selected_products|default:"{}"|json_script:"selected-products-data" }}
+{{ selected_variants|default:"{}"|json_script:"selected-variants-data" }}
+{{ selected_sales_units|default:"{}"|json_script:"selected-sales-units-data" }}
+
 <script>
     document.addEventListener('DOMContentLoaded', function () {
         // ========== УПРАВЛЕНИЕ ЦЕНОЙ КОМПЛЕКТА ==========
@@ -550,6 +578,7 @@ document.addEventListener('DOMContentLoaded', function() {
         const finalPriceDisplay = document.getElementById('finalPriceDisplay');
 
         let basePrice = 0;
+        let activeUpdates = 0; // Счетчик активных обновлений
 
         // Кэш цен товаров для быстрого доступа
         const priceCache = {};
@@ -743,6 +772,19 @@ document.addEventListener('DOMContentLoaded', function() {
 
         // Функция для обновления списка единиц продажи при выборе товара
         async function updateSalesUnitsOptions(salesUnitSelect, productValue) {
+            activeUpdates++; // Начинаем обновление
+            try {
+                // Сохраняем текущее значение перед очисткой (важно для редактирования и копирования)
+                let targetValue = salesUnitSelect.value;
+
+                // Если значения нет, проверяем preloaded данные (фаллбэк для инициализации)
+                if (!targetValue) {
+                    const fieldName = salesUnitSelect.name;
+                    if (selectedSalesUnits && selectedSalesUnits[fieldName]) {
+                        targetValue = selectedSalesUnits[fieldName].id;
+                    }
+                }
+
                 // Очищаем текущие опции
                 salesUnitSelect.innerHTML = '<option value="">---------</option>';
                 salesUnitSelect.disabled = true;
@@ -761,7 +803,6 @@ document.addEventListener('DOMContentLoaded', function() {
                 }
 
                 if (isNaN(productId) || productId <= 0) {
-            console.warn('updateSalesUnitsOptions: invalid product id', productValue);
                     return;
                 }
 
@@ -783,13 +824,25 @@ document.addEventListener('DOMContentLoaded', function() {
                                 salesUnitSelect.appendChild(option);
                             });
                             salesUnitSelect.disabled = false;
-                    // Обновляем Select2
+
+                            // Восстанавливаем значение
+                            if (targetValue) {
+                                $(salesUnitSelect).val(targetValue).trigger('change');
+                            } else {
+                                // Обновляем Select2 без значения
                                 $(salesUnitSelect).trigger('change');
                             }
                         }
+                    }
                 } catch (error) {
                     console.error('Error fetching sales units:', error);
                 }
+            } finally {
+                activeUpdates--; // Завершаем обновление
+                if (activeUpdates === 0) {
+                    calculateFinalPrice();
+                }
+            }
         }
 
         // Обновляем data-product-id и загружаем цену при выборе товара
@@ -809,8 +862,8 @@ document.addEventListener('DOMContentLoaded', function() {
                 if (salesUnitSelect) {
                     await updateSalesUnitsOptions(salesUnitSelect, this.value);
                 }
-            calculateFinalPrice();
             }
+            calculateFinalPrice();
         }).on('select2:unselect', function () {
             const form = $(this).closest('.kititem-form');
             // Очищаем список единиц продажи
@@ -885,6 +938,11 @@ document.addEventListener('DOMContentLoaded', function() {
 
         // Функция для расчета финальной цены
         async function calculateFinalPrice() {
+            // Если идут обновления - не считаем, ждем их завершения
+            if (activeUpdates > 0) {
+                return;
+            }
+
             // Получаем базовую цену (сумма всех компонентов)
             let newBasePrice = 0;
             const formsContainer = document.getElementById('kititem-forms');
@@ -1060,8 +1118,8 @@ document.addEventListener('DOMContentLoaded', function() {
             }
         });
 
-    // Инициальный расчет (асинхронно)
+        // Инициальный расчет не нужен, так как он выполняется по событиям изменения полей
-    calculateFinalPrice();
+        // и после завершения загрузки единиц продажи
 
         // ========== SELECT2 ИНИЦИАЛИЗАЦИЯ ==========
         function initSelect2(element, type, preloadedData) {
@@ -1072,9 +1130,9 @@ document.addEventListener('DOMContentLoaded', function() {
             }
         }
 
-    const selectedProducts = {{ selected_products|default:"{}"|safe }};
+        const selectedProducts = JSON.parse(document.getElementById('selected-products-data').textContent || '{}');
-    const selectedVariants = {{ selected_variants|default:"{}"|safe }};
+        const selectedVariants = JSON.parse(document.getElementById('selected-variants-data').textContent || '{}');
-    const selectedSalesUnits = {{ selected_sales_units|default:"{}"|safe }};
+        const selectedSalesUnits = JSON.parse(document.getElementById('selected-sales-units-data').textContent || '{}');
 
         $('[name$="-product"]').each(function () {
             const fieldName = $(this).attr('name');
@@ -1315,12 +1373,38 @@ document.addEventListener('DOMContentLoaded', function() {
                         reader.readAsDataURL(file);
                     });
                 } else {
-                photoPreviewContainer.style.display = 'none';
+                    photoPreviewContainer.style.display = 'none'; // Only hide if no source photos too (will check later)
                     photoPreview.innerHTML = '';
+
+                    // Re-render source photos if they exist and we just cleared new files
+                    if (document.querySelectorAll('.source-photo-item').length > 0) {
+                        photoPreviewContainer.style.display = 'block';
+                    }
                 }
             });
         }
 
+        // Render source photos if present
+        {% if source_photos %}
+        photoPreviewContainer.style.display = 'block';
+        {% for photo in source_photos %}
+        (function () {
+            const col = document.createElement('div');
+            col.className = 'col-4 col-md-3 col-lg-2 source-photo-item';
+            col.innerHTML = `
+                        <div class="card position-relative border-0 shadow-sm">
+                            <img src="{{ photo.image.url }}" class="card-img-top" alt="Source Photo">
+                            <button type="button" class="btn btn-sm btn-danger position-absolute top-0 end-0 m-1" onclick="this.closest('.col-4').remove();">
+                                <i class="bi bi-x"></i>
+                            </button>
+                            <input type="hidden" name="copied_photos" value="{{ photo.id }}">
+                        </div>
+                    `;
+            photoPreview.appendChild(col);
+        })();
+        {% endfor %}
+        {% endif %}
+
         window.removePhoto = function (index) {
             selectedFiles.splice(index, 1);
             const dataTransfer = new DataTransfer();

myproject/products/templates/products/productkit_edit.html

@@ -506,6 +506,9 @@
             <a href="{% url 'products:productkit-detail' object.pk %}" class="btn btn-outline-secondary">
                 Отмена
             </a>
+            <a href="{% url 'products:productkit-create' %}?copy_from={{ object.pk }}" class="btn btn-warning text-white mx-2">
+                <i class="bi bi-files me-1"></i>Копировать комплект
+            </a>
             <button type="submit" class="btn btn-primary px-4">
                 <i class="bi bi-check-circle me-1"></i>Сохранить изменения
             </button>

myproject/products/views/productkit_views.py

@@ -9,9 +9,10 @@ from django.shortcuts import redirect
 from django.db import transaction, IntegrityError
 
 from user_roles.mixins import ManagerOwnerRequiredMixin
-from ..models import ProductKit, ProductCategory, ProductTag, ProductKitPhoto, Product, ProductVariantGroup, BouquetName
+from ..models import ProductKit, ProductCategory, ProductTag, ProductKitPhoto, Product, ProductVariantGroup, BouquetName, ProductSalesUnit
 from ..forms import ProductKitForm, KitItemFormSetCreate, KitItemFormSetUpdate
 from .utils import handle_photos
+import os
 
 
 class ProductKitListView(LoginRequiredMixin, ManagerOwnerRequiredMixin, ListView):
@@ -97,6 +98,37 @@ class ProductKitCreateView(LoginRequiredMixin, ManagerOwnerRequiredMixin, Create
     form_class = ProductKitForm
     template_name = 'products/productkit_create.html'
 
+    def get_initial(self):
+        initial = super().get_initial()
+        copy_id = self.request.GET.get('copy_from')
+        if copy_id:
+            try:
+                kit = ProductKit.objects.get(pk=copy_id)
+                
+                # Generate unique name
+                base_name = f"{kit.name} (Копия)"
+                new_name = base_name
+                counter = 1
+                while ProductKit.objects.filter(name=new_name).exists():
+                    counter += 1
+                    new_name = f"{base_name} {counter}"
+                
+                initial.update({
+                    'name': new_name,
+                    'description': kit.description,
+                    'short_description': kit.short_description,
+                    'categories': list(kit.categories.values_list('pk', flat=True)),
+                    'tags': list(kit.tags.values_list('pk', flat=True)),
+                    'sale_price': kit.sale_price,
+                    'price_adjustment_type': kit.price_adjustment_type,
+                    'price_adjustment_value': kit.price_adjustment_value,
+                    'external_category': kit.external_category,
+                    'status': 'active',  # Default to active for new kits
+                })
+            except ProductKit.DoesNotExist:
+                pass
+        return initial
+
     def post(self, request, *args, **kwargs):
         """
         Обрабатываем POST данные и очищаем ID товаров/комплектов от префиксов.
@@ -132,7 +164,6 @@ class ProductKitCreateView(LoginRequiredMixin, ManagerOwnerRequiredMixin, Create
             context['kititem_formset'] = KitItemFormSetCreate(self.request.POST, prefix='kititem')
 
             # При ошибке валидации: извлекаем выбранные товары для предзагрузки в Select2
-            from ..models import Product, ProductVariantGroup, ProductSalesUnit
             selected_products = {}
             selected_variants = {}
             selected_sales_units = {}
@@ -194,9 +225,99 @@ class ProductKitCreateView(LoginRequiredMixin, ManagerOwnerRequiredMixin, Create
             context['selected_products'] = selected_products
             context['selected_variants'] = selected_variants
             context['selected_sales_units'] = selected_sales_units
+        else:
+            # COPY KIT LOGIC
+            copy_id = self.request.GET.get('copy_from')
+            initial_items = []
+            selected_products = {}
+            selected_variants = {}
+            selected_sales_units = {}
+
+            if copy_id:
+                try:
+                    source_kit = ProductKit.objects.get(pk=copy_id)
+                    for item in source_kit.kit_items.all():
+                        item_data = {
+                            'quantity': item.quantity,
+                            # Delete flag is false by default
+                        }
+                        
+                        form_prefix = f"kititem-{len(initial_items)}"
+                        
+                        if item.product:
+                            item_data['product'] = item.product
+                            # Select2 prefill
+                            product = item.product
+                            text = product.name
+                            if product.sku:
+                                text += f" ({product.sku})"
+                            actual_price = product.sale_price if product.sale_price else product.price
+                            selected_products[f"{form_prefix}-product"] = {
+                                'id': product.id,
+                                'text': text,
+                                'price': str(product.price) if product.price else None,
+                                'actual_price': str(actual_price) if actual_price else '0'
+                            }
+                            
+                        if item.sales_unit:
+                            item_data['sales_unit'] = item.sales_unit
+                            # Select2 prefill
+                            sales_unit = item.sales_unit
+                            text = f"{sales_unit.name} ({sales_unit.product.name})"
+                            actual_price = sales_unit.sale_price if sales_unit.sale_price else sales_unit.price
+                            selected_sales_units[f"{form_prefix}-sales_unit"] = {
+                                'id': sales_unit.id,
+                                'text': text,
+                                'price': str(sales_unit.price) if sales_unit.price else None,
+                                'actual_price': str(actual_price) if actual_price else '0'
+                            }
+
+                        if item.variant_group:
+                            item_data['variant_group'] = item.variant_group
+                            # Select2 prefill
+                            variant_group = ProductVariantGroup.objects.prefetch_related(
+                                'items__product'
+                            ).get(id=item.variant_group.id)
+                            variant_price = variant_group.price or 0
+                            count = variant_group.items.count()
+                            selected_variants[f"{form_prefix}-variant_group"] = {
+                                'id': variant_group.id,
+                                'text': f"{variant_group.name} ({count} вариантов)",
+                                'price': str(variant_price),
+                                'actual_price': str(variant_price),
+                                'type': 'variant',
+                                'count': count
+                            }
+
+                        initial_items.append(item_data)
+                except ProductKit.DoesNotExist:
+                    pass
+
+            if initial_items:
+                context['kititem_formset'] = KitItemFormSetCreate(
+                    prefix='kititem',
+                    initial=initial_items
+                )
+                context['kititem_formset'].extra = len(initial_items)
             else:
                 context['kititem_formset'] = KitItemFormSetCreate(prefix='kititem')
 
+            # Pass Select2 data to context
+            context['selected_products'] = selected_products
+            context['selected_variants'] = selected_variants
+            context['selected_sales_units'] = selected_sales_units
+            
+            # Pass source photos if copying
+            if copy_id:
+                try:
+                    source_kit = ProductKit.objects.prefetch_related('photos').get(pk=copy_id)
+                    photos = source_kit.photos.all().order_by('order')
+                    print(f"DEBUG: Found {photos.count()} source photos for kit {copy_id}")
+                    context['source_photos'] = photos
+                except ProductKit.DoesNotExist:
+                    print(f"DEBUG: Source kit {copy_id} not found")
+                    pass
+
         # Количество названий букетов в базе
         context['bouquet_names_count'] = BouquetName.objects.count()
 
@@ -235,6 +356,48 @@ class ProductKitCreateView(LoginRequiredMixin, ManagerOwnerRequiredMixin, Create
                 # Обработка фотографий
                 handle_photos(self.request, self.object, ProductKitPhoto, 'kit')
 
+                # Handle copied photos
+                copied_photo_ids = self.request.POST.getlist('copied_photos')
+                print(f"DEBUG: copied_photo_ids in POST: {copied_photo_ids}")
+                
+                if copied_photo_ids:
+                    from django.core.files.base import ContentFile
+                    original_photos = ProductKitPhoto.objects.filter(id__in=copied_photo_ids)
+                    print(f"DEBUG: Found {original_photos.count()} original photos to copy")
+                    
+                    # Get max order from existing photos (uploaded via handle_photos)
+                    from django.db.models import Max
+                    max_order = self.object.photos.aggregate(Max('order'))['order__max']
+                    next_order = 0 if max_order is None else max_order + 1
+                    print(f"DEBUG: Starting order for copies: {next_order}")
+
+                    for photo in original_photos:
+                        try:
+                            # Open the original image file
+                            if photo.image:
+                                print(f"DEBUG: Processing photo {photo.id}: {photo.image.name}")
+                                with photo.image.open('rb') as f:
+                                    image_content = f.read()
+                                    
+                                # Create a new ContentFile
+                                new_image_name = f"copy_{self.object.id}_{os.path.basename(photo.image.name)}"
+                                print(f"DEBUG: New image name: {new_image_name}")
+                                
+                                # Create new photo instance
+                                new_photo = ProductKitPhoto(kit=self.object, order=next_order)
+                                # Save the image file (this also saves the model instance)
+                                new_photo.image.save(new_image_name, ContentFile(image_content))
+                                print(f"DEBUG: Successfully saved copy for photo {photo.id}")
+                                
+                                next_order += 1
+                            else:
+                                print(f"DEBUG: Photo {photo.id} has no image file")
+                        except Exception as e:
+                            print(f"Error copying photo {photo.id}: {e}")
+                            import traceback
+                            traceback.print_exc()
+                            continue 
+
                 messages.success(
                     self.request,
                     f'Комплект "{self.object.name}" успешно создан!'

myproject/reproduce_issue.py

@@ -0,0 +1,120 @@
+
+import os
+import sys
+import json
+import django
+from decimal import Decimal
+
+# Setup Django
+sys.path.append(os.getcwd())
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "myproject.settings")
+django.setup()
+
+from django.test import RequestFactory
+from django.contrib.auth import get_user_model
+from django.db import connection
+
+from customers.models import Customer
+from inventory.models import Warehouse, Sale
+from products.models import Product, UnitOfMeasure
+from pos.views import pos_checkout
+from orders.models import OrderStatus
+
+def run():
+    # Setup Data
+    User = get_user_model()
+    user = User.objects.first()
+    if not user:
+        print("No user found")
+        return
+
+    # Create/Get Customer
+    customer, _ = Customer.objects.get_or_create(
+        name="Test Customer",
+        defaults={'phone': '+375291112233'}
+    )
+
+    # Create/Get Warehouse
+    warehouse, _ = Warehouse.objects.get_or_create(
+        name="Test Warehouse",
+        defaults={'is_active': True}
+    )
+
+    # Create product
+    product, _ = Product.objects.get_or_create(
+        name="Test Product Debug",
+        defaults={
+            'sku': 'DEBUG001',
+            'buying_price': 10,
+            'actual_price': 50,
+            'warehouse': warehouse
+        }
+    )
+    product.actual_price = 50
+    product.save()
+
+    # Ensure OrderStatus exists
+    OrderStatus.objects.get_or_create(code='completed', is_system=True, defaults={'name': 'Completed', 'is_positive_end': True})
+    OrderStatus.objects.get_or_create(code='draft', is_system=True, defaults={'name': 'Draft'})
+
+    # Prepare Request
+    factory = RequestFactory()
+    
+    payload = {
+        "customer_id": customer.id,
+        "warehouse_id": warehouse.id,
+        "items": [
+            {
+                "type": "product",
+                "id": product.id,
+                "quantity": 1,
+                "price": 100.00,  # Custom price
+                "quantity_base": 1
+            }
+        ],
+        "payments": [
+            {"payment_method": "cash", "amount": 100.00}
+        ],
+        "notes": "Debug Sale"
+    }
+
+    request = factory.post(
+        '/pos/api/checkout/',
+        data=json.dumps(payload),
+        content_type='application/json'
+    )
+    request.user = user
+
+    print("Executing pos_checkout...")
+    response = pos_checkout(request)
+    print(f"Response: {response.content}")
+
+    # Verify Sale
+    sales = Sale.objects.filter(product=product).order_by('-id')[:1]
+    if sales:
+        sale = sales[0]
+        print(f"Sale created. ID: {sale.id}")
+        print(f"Sale Quantity: {sale.quantity}")
+        print(f"Sale Price: {sale.sale_price}")
+        if sale.sale_price == 0:
+            print("FAILURE: Sale price is 0!")
+        else:
+            print(f"SUCCESS: Sale price is {sale.sale_price}")
+    else:
+        print("FAILURE: No Sale created!")
+
+if __name__ == "__main__":
+    from django_tenants.utils import schema_context
+    # Replace with actual schema name if needed, assuming 'public' for now or the default tenant
+    # Since I don't know the tenant, I'll try to run in the current context.
+    # But usually need to set schema.
+    # Let's try to find a tenant.
+    from tenants.models import Client
+    tenant = Client.objects.first()
+    if tenant:
+        print(f"Running in tenant: {tenant.schema_name}")
+        with schema_context(tenant.schema_name):
+            run()
+    else:
+        print("No tenant found, running in public?")
+        run()