feat: Add Product Kit creation and editing functionality with new views and templates.

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

@@ -9,7 +9,7 @@ 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
 
@@ -97,6 +97,28 @@ 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)
+                initial.update({
+                    'name': f"{kit.name} (Копия)",
+                    '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 +154,6 @@ 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 = {}
@@ -195,7 +216,86 @@ class ProductKitCreateView(LoginRequiredMixin, ManagerOwnerRequiredMixin, Create
             context['selected_variants'] = selected_variants
             context['selected_sales_units'] = selected_sales_units
         else:
-            context['kititem_formset'] = KitItemFormSetCreate(prefix='kititem')
+            # 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
 
         # Количество названий букетов в базе
         context['bouquet_names_count'] = BouquetName.objects.count()