修改时间时区问题

inventory-backend/app/services/outbound_service.py

@@ -1,5 +1,5 @@
 import uuid
-from datetime import datetime
+from datetime import datetime, timezone, timedelta  # [修改] 引入 timezone 和 timedelta
 from sqlalchemy import or_
 from app.extensions import db
 from app.models.outbound import TransOutbound
@@ -16,8 +16,15 @@ class OutboundService:
 
     @staticmethod
     def generate_outbound_no():
-        """生成出库单号: OUT-yyyyMMdd-随机码"""
-        date_str = datetime.now().strftime('%Y%m%d')
+        """
+        生成出库单号: OUT-yyyyMMdd-随机码
+        [修改] 强制使用北京时间生成日期前缀
+        """
+        # 获取北京时间
+        beijing_tz = timezone(timedelta(hours=8))
+        current_time = datetime.now(beijing_tz)
+
+        date_str = current_time.strftime('%Y%m%d')
         short_uuid = uuid.uuid4().hex[:6].upper()
         return f"OUT-{date_str}-{short_uuid}"
 
@@ -143,6 +150,12 @@ class OutboundService:
             stock_item.stock_quantity = float(stock_item.stock_quantity) - quantity
             stock_item.available_quantity = float(stock_item.available_quantity) - quantity
 
+            # [新增] 计算北京时间
+            beijing_tz = timezone(timedelta(hours=8))
+            # replace(tzinfo=None) 是为了让存入数据库的时间变为 naive time (不带时区信息的本地时间)
+            # 这样数据库看起来就是 "2023-10-27 15:00:00" 而不是 UTC 时间
+            current_time = datetime.now(beijing_tz).replace(tzinfo=None)
+
             # 5. 创建出库记录
             new_outbound = TransOutbound(
                 outbound_no=OutboundService.generate_outbound_no(),
@@ -154,6 +167,10 @@ class OutboundService:
                 quantity=quantity,
                 consumer_name=data.get('consumer_name'),
                 signature_path=data.get('signature_path'),  # 存储签名的 URL
+
+                # [关键] 显式设置北京时间，覆盖 Model 中的 default=datetime.now (UTC)
+                outbound_time=current_time,
+
                 operator_name=operator_name,
                 remark=data.get('remark')
             )