Добавлены представления и маршруты для документов списания

- WriteOffDocumentListView - список документов с пагинацией
- WriteOffDocumentCreateView - создание нового документа
- WriteOffDocumentDetailView - детальный просмотр документа
- WriteOffDocumentAddItemView - добавление позиции (AJAX)
- WriteOffDocumentUpdateItemView - обновление позиции (AJAX)
- WriteOffDocumentRemoveItemView - удаление позиции (AJAX)
- WriteOffDocumentConfirmView - проведение документа
- WriteOffDocumentCancelView - отмена документа
- Добавлены URL-маршруты для всех операций с документами списания
- Поддержка AJAX запросов для динамической работы с позициями

myproject/inventory/urls.py

@@ -28,6 +28,12 @@ from .views import (
 )
 # Showcase views
 from .views.showcase import ShowcaseListView, ShowcaseCreateView, ShowcaseUpdateView, ShowcaseDeleteView, SetDefaultShowcaseView
+# WriteOff Document views
+from .views.writeoff_document import (
+    WriteOffDocumentListView, WriteOffDocumentCreateView, WriteOffDocumentDetailView,
+    WriteOffDocumentAddItemView, WriteOffDocumentUpdateItemView, WriteOffDocumentRemoveItemView,
+    WriteOffDocumentConfirmView, WriteOffDocumentCancelView
+)
 # Debug views
 from .views.debug_views import debug_inventory_page
 from . import views
@@ -68,12 +74,22 @@ urlpatterns = [
     path('inventory-ops/<int:pk>/', InventoryDetailView.as_view(), name='inventory-detail'),
     path('inventory-ops/<int:pk>/lines/add/', InventoryLineCreateBulkView.as_view(), name='inventory-lines-add'),
 
-    # ==================== WRITEOFF ====================
+    # ==================== WRITEOFF (одиночные записи) ====================
     path('writeoffs/', WriteOffListView.as_view(), name='writeoff-list'),
     path('writeoffs/create/', WriteOffCreateView.as_view(), name='writeoff-create'),
     path('writeoffs/<int:pk>/edit/', WriteOffUpdateView.as_view(), name='writeoff-update'),
     path('writeoffs/<int:pk>/delete/', WriteOffDeleteView.as_view(), name='writeoff-delete'),
 
+    # ==================== WRITEOFF DOCUMENT (документы списания) ====================
+    path('writeoff-documents/', WriteOffDocumentListView.as_view(), name='writeoff-document-list'),
+    path('writeoff-documents/create/', WriteOffDocumentCreateView.as_view(), name='writeoff-document-create'),
+    path('writeoff-documents/<int:pk>/', WriteOffDocumentDetailView.as_view(), name='writeoff-document-detail'),
+    path('writeoff-documents/<int:pk>/add-item/', WriteOffDocumentAddItemView.as_view(), name='writeoff-document-add-item'),
+    path('writeoff-documents/<int:pk>/update-item/<int:item_pk>/', WriteOffDocumentUpdateItemView.as_view(), name='writeoff-document-update-item'),
+    path('writeoff-documents/<int:pk>/remove-item/<int:item_pk>/', WriteOffDocumentRemoveItemView.as_view(), name='writeoff-document-remove-item'),
+    path('writeoff-documents/<int:pk>/confirm/', WriteOffDocumentConfirmView.as_view(), name='writeoff-document-confirm'),
+    path('writeoff-documents/<int:pk>/cancel/', WriteOffDocumentCancelView.as_view(), name='writeoff-document-cancel'),
+
     # ==================== TRANSFER ====================
     path('transfers/', TransferListView.as_view(), name='transfer-list'),
     path('transfers/create/', TransferBulkCreateView.as_view(), name='transfer-create'),  # Новая форма массового перемещения

myproject/inventory/views/writeoff_document.py

@@ -0,0 +1,208 @@
+"""
+Views для работы с документами списания (WriteOffDocument).
+"""
+
+from django.views.generic import ListView, CreateView, DetailView, View
+from django.contrib.auth.mixins import LoginRequiredMixin
+from django.urls import reverse
+from django.shortcuts import get_object_or_404, redirect
+from django.contrib import messages
+from django.http import JsonResponse
+from django.db import transaction
+from django.core.exceptions import ValidationError
+
+from inventory.models import WriteOffDocument, WriteOffDocumentItem
+from inventory.forms import WriteOffDocumentForm, WriteOffDocumentItemForm
+from inventory.services.writeoff_document_service import WriteOffDocumentService
+
+
+class WriteOffDocumentListView(LoginRequiredMixin, ListView):
+    """Список документов списания"""
+    model = WriteOffDocument
+    template_name = 'inventory/writeoff_document/list.html'
+    context_object_name = 'documents'
+    paginate_by = 20
+
+    def get_queryset(self):
+        return WriteOffDocument.objects.select_related(
+            'warehouse', 'created_by', 'confirmed_by'
+        ).prefetch_related('items').order_by('-date', '-created_at')
+
+
+class WriteOffDocumentCreateView(LoginRequiredMixin, CreateView):
+    """Создание документа списания"""
+    model = WriteOffDocument
+    form_class = WriteOffDocumentForm
+    template_name = 'inventory/writeoff_document/form.html'
+
+    def form_valid(self, form):
+        document = WriteOffDocumentService.create_document(
+            warehouse=form.cleaned_data['warehouse'],
+            date=form.cleaned_data['date'],
+            notes=form.cleaned_data.get('notes'),
+            created_by=self.request.user
+        )
+        messages.success(self.request, f'Документ {document.document_number} создан')
+        return redirect('inventory:writeoff-document-detail', pk=document.pk)
+
+
+class WriteOffDocumentDetailView(LoginRequiredMixin, DetailView):
+    """Детальный просмотр документа списания"""
+    model = WriteOffDocument
+    template_name = 'inventory/writeoff_document/detail.html'
+    context_object_name = 'document'
+
+    def get_queryset(self):
+        return WriteOffDocument.objects.select_related(
+            'warehouse', 'created_by', 'confirmed_by'
+        ).prefetch_related('items__product', 'items__reservation')
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        context['item_form'] = WriteOffDocumentItemForm(document=self.object)
+        return context
+
+
+class WriteOffDocumentAddItemView(LoginRequiredMixin, View):
+    """Добавление позиции в документ списания"""
+
+    @transaction.atomic
+    def post(self, request, pk):
+        document = get_object_or_404(WriteOffDocument, pk=pk)
+        form = WriteOffDocumentItemForm(request.POST, document=document)
+
+        if form.is_valid():
+            try:
+                item = WriteOffDocumentService.add_item(
+                    document=document,
+                    product=form.cleaned_data['product'],
+                    quantity=form.cleaned_data['quantity'],
+                    reason=form.cleaned_data['reason'],
+                    notes=form.cleaned_data.get('notes')
+                )
+
+                if request.headers.get('X-Requested-With') == 'XMLHttpRequest':
+                    return JsonResponse({
+                        'success': True,
+                        'item_id': item.id,
+                        'message': f'Добавлено: {item.product.name}'
+                    })
+
+                messages.success(request, f'Добавлено: {item.product.name}')
+
+            except ValidationError as e:
+                if request.headers.get('X-Requested-With') == 'XMLHttpRequest':
+                    return JsonResponse({'success': False, 'error': str(e)}, status=400)
+                messages.error(request, str(e))
+        else:
+            if request.headers.get('X-Requested-With') == 'XMLHttpRequest':
+                errors = '; '.join([f"{k}: {v[0]}" for k, v in form.errors.items()])
+                return JsonResponse({'success': False, 'error': errors}, status=400)
+            for field, errors in form.errors.items():
+                for error in errors:
+                    messages.error(request, f'{field}: {error}')
+
+        return redirect('inventory:writeoff-document-detail', pk=pk)
+
+
+class WriteOffDocumentUpdateItemView(LoginRequiredMixin, View):
+    """Обновление позиции документа списания"""
+
+    @transaction.atomic
+    def post(self, request, pk, item_pk):
+        document = get_object_or_404(WriteOffDocument, pk=pk)
+        item = get_object_or_404(WriteOffDocumentItem, pk=item_pk, document=document)
+
+        try:
+            quantity = request.POST.get('quantity')
+            reason = request.POST.get('reason')
+            notes = request.POST.get('notes')
+
+            WriteOffDocumentService.update_item(
+                item,
+                quantity=quantity,
+                reason=reason,
+                notes=notes
+            )
+
+            if request.headers.get('X-Requested-With') == 'XMLHttpRequest':
+                return JsonResponse({
+                    'success': True,
+                    'message': f'Обновлено: {item.product.name}'
+                })
+
+            messages.success(request, f'Обновлено: {item.product.name}')
+
+        except ValidationError as e:
+            if request.headers.get('X-Requested-With') == 'XMLHttpRequest':
+                return JsonResponse({'success': False, 'error': str(e)}, status=400)
+            messages.error(request, str(e))
+
+        return redirect('inventory:writeoff-document-detail', pk=pk)
+
+
+class WriteOffDocumentRemoveItemView(LoginRequiredMixin, View):
+    """Удаление позиции из документа списания"""
+
+    @transaction.atomic
+    def post(self, request, pk, item_pk):
+        document = get_object_or_404(WriteOffDocument, pk=pk)
+        item = get_object_or_404(WriteOffDocumentItem, pk=item_pk, document=document)
+
+        try:
+            product_name = item.product.name
+            WriteOffDocumentService.remove_item(item)
+
+            if request.headers.get('X-Requested-With') == 'XMLHttpRequest':
+                return JsonResponse({
+                    'success': True,
+                    'message': f'Удалено: {product_name}'
+                })
+
+            messages.success(request, f'Удалено: {product_name}')
+
+        except ValidationError as e:
+            if request.headers.get('X-Requested-With') == 'XMLHttpRequest':
+                return JsonResponse({'success': False, 'error': str(e)}, status=400)
+            messages.error(request, str(e))
+
+        return redirect('inventory:writeoff-document-detail', pk=pk)
+
+
+class WriteOffDocumentConfirmView(LoginRequiredMixin, View):
+    """Проведение документа списания"""
+
+    @transaction.atomic
+    def post(self, request, pk):
+        document = get_object_or_404(WriteOffDocument, pk=pk)
+
+        try:
+            result = WriteOffDocumentService.confirm_document(
+                document,
+                confirmed_by=request.user
+            )
+            messages.success(
+                request,
+                f'Документ {document.document_number} проведён. '
+                f'Списано {result["total_quantity"]} шт на сумму {result["total_cost"]:.2f}'
+            )
+        except ValidationError as e:
+            messages.error(request, str(e))
+
+        return redirect('inventory:writeoff-document-detail', pk=pk)
+
+
+class WriteOffDocumentCancelView(LoginRequiredMixin, View):
+    """Отмена документа списания"""
+
+    @transaction.atomic
+    def post(self, request, pk):
+        document = get_object_or_404(WriteOffDocument, pk=pk)
+
+        try:
+            WriteOffDocumentService.cancel_document(document)
+            messages.success(request, f'Документ {document.document_number} отменён')
+        except ValidationError as e:
+            messages.error(request, str(e))
+
+        return redirect('inventory:writeoff-document-list')