fix: 修复资产编辑无法保存的bug

- 恢复Asset模型STATUS_CHOICES定义，状态字段使用下拉选择而非文本输入
- 修复status默认值从中文'在用'改为英文key'in_use'，与数据库存储一致
- 编辑表单新增资产面值(asset_value)字段
- excel_utils适配字段类型变更(DecimalField→CharField, DateField→CharField等)

assetapp/excel_utils.py

@@ -173,41 +173,26 @@ def import_assets_from_excel(ws, category_map, operator=None):
             # 处理状态
             status = STATUS_MAP_REVERSE.get(data.get('status', '在用'), 'in_use')
 
-            # 处理日期
-            from datetime import datetime as dt
-            purchase_date = None
-            warranty_expire = None
-            if data.get('purchase_date'):
-                try:
-                    purchase_date = dt.strptime(data['purchase_date'], '%Y-%m-%d').date()
-                except ValueError:
-                    pass
-            if data.get('warranty_expire'):
-                try:
-                    warranty_expire = dt.strptime(data['warranty_expire'], '%Y-%m-%d').date()
-                except ValueError:
-                    pass
+            # 处理日期 - 直接存字符串
+            purchase_date = data.get('purchase_date', '').strip() or ''
+            warranty_expire = data.get('warranty_expire', '').strip() or ''
 
             # 处理IP
-            bmc_address = data.get('bmc_address') or None
-            ip_address = data.get('ip_address') or None
+            bmc_address = data.get('bmc_address', '').strip() or ''
+            ip_address = data.get('ip_address', '').strip() or ''
 
-            # 处理资产面值
-            from decimal import Decimal, InvalidOperation
-            asset_value = None
-            if data.get('asset_value'):
-                try:
-                    asset_value = Decimal(str(data['asset_value']).replace(',', ''))
-                except (InvalidOperation, ValueError):
-                    pass
+            # 资产面值 - 直接存字符串
+            asset_value = data.get('asset_value', '').strip() or ''
 
             # 处理ID - 如果提供了ID且已存在，则更新该记录
             import_id = data.get('id', '').strip()
             asset = None
             is_update = False
-            if import_id:
+            if import_id and import_id.isdigit():
                 try:
-                    asset = Asset.objects.get(id=int(import_id))
+                    id_val = int(import_id) if str(import_id).strip().isdigit() else None
+                    if id_val:
+                        asset = Asset.objects.get(id=id_val)
                     is_update = True
                 except (Asset.DoesNotExist, ValueError):
                     asset = None
@@ -228,7 +213,7 @@ def import_assets_from_excel(ws, category_map, operator=None):
                 asset.ip_address = ip_address
                 asset.gpu_type = data.get('gpu_type', '')
                 gpu_count_str = data.get('gpu_count', '').strip()
-                asset.gpu_count = int(gpu_count_str) if gpu_count_str else None
+                asset.gpu_count = gpu_count_str if gpu_count_str else ''
                 asset.purchase_date = purchase_date
                 asset.warranty_expire = warranty_expire
                 asset.supplier = data.get('supplier', '')
@@ -250,7 +235,7 @@ def import_assets_from_excel(ws, category_map, operator=None):
             else:
                 # 创建新记录
                 gpu_count_str = data.get('gpu_count', '').strip()
-                gpu_count = int(gpu_count_str) if gpu_count_str else None
+                gpu_count = gpu_count_str if gpu_count_str else ''
                 
                 # 创建参数
                 create_kwargs = {
@@ -281,9 +266,10 @@ def import_assets_from_excel(ws, category_map, operator=None):
                 }
                 
                 # 如果Excel提供了ID，使用该ID创建
-                if import_id:
+                if import_id and import_id.isdigit():
                     try:
-                        create_kwargs['id'] = int(import_id)
+                        if str(import_id).strip().isdigit():
+                            create_kwargs['id'] = int(import_id)
                     except ValueError:
                         pass