fix: fix delete email issue

src/backend/email_notice/middleware.py

@@ -14,86 +14,6 @@ class EmailNotificationMiddleware(MiddlewareMixin):
     def __init__(self, get_response):
         self.get_response = get_response
         super().__init__(get_response)
-        # 用于存储删除前的数据
-        self._delete_data_cache = {}
-
-    def process_request(self, request):
-        """在处理请求前，如果是删除操作，先获取要删除的数据"""
-        try:
-            # 只处理DELETE操作
-            if request.method != 'DELETE':
-                return None
-
-            # 只处理API请求
-            if not request.path.startswith('/api/'):
-                return None
-
-            # 从URL路径中提取ID
-            path_parts = request.path.split('/')
-            record_id = None
-            for part in path_parts:
-                if part.isdigit():
-                    record_id = part
-                    break
-
-            if not record_id:
-                return None
-
-            # 根据路径类型获取对应的数据
-            if '/api/items/' in request.path:
-                data = self._get_item_data_before_delete(record_id)
-                if data:
-                    self._delete_data_cache[f"item_{record_id}"] = data
-            elif '/api/records/' in request.path or '/api/finance/' in request.path:
-                data = self._get_finance_data_before_delete(record_id)
-                if data:
-                    self._delete_data_cache[f"finance_{record_id}"] = data
-
-        except Exception as e:
-            logger.error(f"获取删除前数据失败: {e}")
-
-        return None
-
-    def _get_item_data_before_delete(self, item_id):
-        """获取物品删除前的数据"""
-        try:
-            from items.models import Item
-            item = Item.objects.get(id=item_id)
-            return {
-                'id': item.id,
-                'name': item.name,
-                'serial_number': item.serial_number,
-                'status': item.status,
-                'category': item.category,
-                'owner': item.owner,
-                'purchase_date': str(item.purchase_date) if item.purchase_date else '',
-                'purchase_price': str(item.purchase_price) if item.purchase_price else '',
-                'description': item.description,
-                'updated_at': str(item.updated_at) if hasattr(item, 'updated_at') else '',
-            }
-        except Exception as e:
-            logger.error(f"获取物品数据失败: {e}")
-            return None
-
-    def _get_finance_data_before_delete(self, record_id):
-        """获取财务记录删除前的数据"""
-        try:
-            from finance.models import FinanceRecord
-            record = FinanceRecord.objects.get(id=record_id)
-            return {
-                'id': record.id,
-                'amount': str(record.amount),
-                'transaction_type': record.transaction_type,
-                'description': record.description,
-                'department': record.department.name if record.department else '',
-                'category': record.category.name if record.category else '',
-                'approver': record.approver,
-                'transaction_date': str(record.transaction_date),
-                'proof_images': [str(img.image) for img in record.proof_images.all()] if hasattr(record, 'proof_images') else []
-            }
-        except Exception as e:
-            logger.error(f"获取财务记录数据失败: {e}")
-            return None
 
     def process_response(self, request, response):
         """处理响应，在数据修改操作成功后异步发送邮件通知"""
@@ -102,8 +22,8 @@ class EmailNotificationMiddleware(MiddlewareMixin):
             if not request.path.startswith('/api/'):
                 return response
 
-            # 只处理数据修改操作
-            if request.method not in ['POST', 'PUT', 'PATCH', 'DELETE']:
+            # 只处理数据新增修改操作，但排除DELETE操作，毕竟删除操作已经另外重写
+            if request.method not in ['POST', 'PUT', 'PATCH']:
                 return response
 
             # 只处理成功的响应
@@ -149,34 +69,6 @@ class EmailNotificationMiddleware(MiddlewareMixin):
             try:
                 operation_type = self._get_operation_type(request.method, request.path)
 
-                # 对于DELETE操作，使用预先获取的数据
-                if request.method == 'DELETE':
-                    # 从URL路径中提取ID
-                    path_parts = request.path.split('/')
-                    item_id = None
-                    for part in path_parts:
-                        if part.isdigit():
-                            item_id = part
-                            break
-
-                    # 尝试从缓存中获取删除前的数据
-                    cached_data = self._delete_data_cache.get(f"item_{item_id}")
-                    if cached_data:
-                        notification_data = {
-                            'id': cached_data.get('id', item_id),
-                            'name': f"[已删除] {cached_data.get('name', '未知物品')}",
-                            'serial_number': cached_data.get('serial_number', ''),
-                            'status': f"[删除前状态: {cached_data.get('status', '未知')}]",
-                            'category': cached_data.get('category', ''),
-                            'owner': cached_data.get('owner', ''),
-                            'purchase_date': cached_data.get('purchase_date', ''),
-                            'purchase_price': cached_data.get('purchase_price', ''),
-                            'description': f"删除前描述: {cached_data.get('description', '')}",
-                            'timestamp': cached_data.get('updated_at', ''),
-                            'operation_path': request.path,
-                            'operation_method': request.method
-                        }
-                else:
                 # 尝试从响应中获取数据
                 if hasattr(response, 'data'):
                     item_data = response.data
@@ -209,7 +101,7 @@ class EmailNotificationMiddleware(MiddlewareMixin):
                 )
 
             except Exception as e:
-                logger.error(f"异步处理物品操作通知失败: {e} 如果需要查看删除前的数据，请检查以前的邮件。")
+                logger.error(f"异步处理物品操作通知失败: {e}")
 
         # 创建并启动后台线程
         thread = threading.Thread(target=send_notification)
@@ -222,29 +114,6 @@ class EmailNotificationMiddleware(MiddlewareMixin):
             try:
                 operation_type = self._get_operation_type(request.method, request.path)
 
-                # 对于DELETE操作，响应通常不包含数据，需要从URL路径中提取ID
-                if request.method == 'DELETE':
-                    # 从URL路径中提取ID
-                    path_parts = request.path.split('/')
-                    record_id = None
-                    for part in path_parts:
-                        if part.isdigit():
-                            record_id = part
-                            break
-
-                    notification_data = {
-                        'id': record_id or '未知',
-                        'amount': '已删除记录',
-                        'transaction_type': '已删除',
-                        'description': '财务记录已被删除',
-                        'department': '未知',
-                        'category': '未知',
-                        'approver': '未知',
-                        'timestamp': '删除时间未知',
-                        'operation_path': request.path,
-                        'operation_method': request.method
-                    }
-                else:
                 # 尝试从响应中获取数据
                 if hasattr(response, 'data'):
                     finance_data = response.data
@@ -278,7 +147,7 @@ class EmailNotificationMiddleware(MiddlewareMixin):
                 )
 
             except Exception as e:
-                logger.error(f"异步处理财务操作通知失败: {e} 如果需要查看删除前的数据，请检查以前的邮件。")
+                logger.error(f"异步处理财务操作通知失败: {e}")
 
         # 创建并启动后台线程
         thread = threading.Thread(target=send_notification)
@@ -291,7 +160,5 @@ class EmailNotificationMiddleware(MiddlewareMixin):
             return 'CREATE'
         elif method in ['PUT', 'PATCH']:
             return 'UPDATE'
-        elif method == 'DELETE':
-            return 'DELETE'
         else:
             return 'UNKNOWN'

src/backend/finance/views.py

@@ -1,7 +1,9 @@
 import os
+import threading
 from rest_framework import viewsets, status
 from rest_framework.decorators import action
 from rest_framework.response import Response
+from django.utils import timezone
 from .models import FinancialRecord, Department, Category, ProofImage
 from .serializers import (
     FinancialRecordWriteSerializer,
@@ -23,6 +25,102 @@ class FinancialRecordViewSet(viewsets.ModelViewSet):
             return FinancialRecordReadSerializer
         return FinancialRecordWriteSerializer
 
+    def _get_user_info(self, request):
+        """获取用户信息"""
+        try:
+            if hasattr(request, 'user') and request.user.is_authenticated:
+                return f"{request.user.username} ({request.user.email})"
+            else:
+                return f"匿名用户 (IP: {self._get_client_ip(request)})"
+        except:
+            return "未知用户"
+
+    def _get_client_ip(self, request):
+        """获取客户端IP"""
+        x_forwarded_for = request.META.get('HTTP_X_FORWARDED_FOR')
+        if x_forwarded_for:
+            ip = x_forwarded_for.split(',')[0]
+        else:
+            ip = request.META.get('REMOTE_ADDR')
+        return ip
+
+    def destroy(self, request, *args, **kwargs):
+        """删除方法，删除并发送邮件通知"""
+        instance = self.get_object()
+
+        # 获取记录信息用于邮件通知
+        record_id = instance.id
+        record_info = {
+            'title': instance.title,
+            'amount': str(instance.amount),
+            'description': instance.description,
+            'record_type': instance.record_type,
+            'transaction_date': str(instance.transaction_date),
+            'department': instance.department.name if instance.department else '',
+            'category': instance.category.name if instance.category else '',
+            'fund_manager': instance.fund_manager if hasattr(instance, 'fund_manager') else ''
+        }
+
+        # 删除关联的凭证图片文件
+        proof_images = ProofImage.objects.filter(financial_record=instance)
+        for proof_image in proof_images:
+            if proof_image.image:
+                try:
+                    file_path = proof_image.image.path
+                    if os.path.isfile(file_path):
+                        os.remove(file_path)
+                        print(f"成功删除凭证文件 {file_path}")
+                except (ValueError, AttributeError, OSError) as e:
+                    print(f"删除凭证文件失败 {e}")
+
+        # 立即删除财务记录（会级联删除相关的凭证图片记录）
+        super().destroy(request, *args, **kwargs)
+
+        # 异步发送删除通知邮件
+        def send_delete_notification():
+            """异步发送删除通知邮件"""
+            try:
+                from email_notice.services import EmailNotificationService
+
+                # 获取用户信息
+                user_info = self._get_user_info(request)
+
+                # 构建邮件通知数据
+                notification_data = {
+                    'id': record_id,
+                    'title': f"[已删除] {record_info['title']}",
+                    'amount': record_info['amount'],
+                    'record_type': record_info['record_type'],
+                    'description': record_info['description'],
+                    'department': record_info['department'],
+                    'category': record_info['category'],
+                    'fund_manager': record_info['fund_manager'],
+                    'transaction_date': record_info['transaction_date'],
+                    'deleted_at': timezone.now().isoformat(),
+                    'operation_path': request.path,
+                    'operation_method': request.method
+                }
+
+                # 发送删除通知邮件
+                EmailNotificationService.send_operation_notification(
+                    'DELETE', '财务记录', notification_data, user_info
+                )
+                print(f"删除通知邮件已发送: 财务记录 ID:{record_id}, 标题:{record_info['title']}")
+
+            except Exception as e:
+                print(f"发送删除通知邮件失败: {e}")
+
+        # 启动异步邮件发送线程
+        email_thread = threading.Thread(target=send_delete_notification)
+        email_thread.daemon = True
+        email_thread.start()
+
+        # 返回删除成功响应
+        return Response({
+            'message': f'财务记录 "{record_info["title"]}" 已成功删除，删除通知邮件正在发送',
+            'deleted_record_info': record_info
+        }, status=status.HTTP_200_OK)
+
     @action(detail=True, methods=['post'])
     def upload_images(self, request, pk=None):
         """为财务记录上传多张凭证图片"""