Update app.py

app.py

@@ -280,25 +280,22 @@ def submit_order1(
         elif session_state['username'] == 'cevcaigou288':
             prefix = 'GU00000'
 
-        # 查询已有订单数量
-        existing_count = session.query(PurchaseOrder).filter(
+       # 查询已有订单数量
+        latest_order = session.query(PurchaseOrder).filter(
             PurchaseOrder.采购编号.like(f"{prefix}%")
-        ).count()
-
-        n = existing_count + 900
-        i = n + 1
+        ).order_by(PurchaseOrder.id.desc()).first()
+        
+        if latest_order:
+            # 从最新订单编号中提取数字部分
+            latest_num = int(latest_order.采购编号[len(prefix):])
+            i = latest_num + 1
+        else:
+            # 如果没有找到相同前缀的订单，从901开始
+            i = 901
+            
         order_name = f"{prefix}{i}"
-
-        # 查找现有运编号记录
-        existing_order = session.query(PurchaseOrder).filter(
-            PurchaseOrder.运编号 == 运编号
-        ).first()
-
-        if not existing_order:
-            session.close()
-            return "未找到相关运编号记录"
-
-        profit = float(销售合同价) * 7 - float(采购价) + float(采购价) * 0.115
+        
+        profit = float(销售合同价) * 7.25 - float(采购价) + float(采购价) * 0.115
 
         # 创建新订单
         new_order = PurchaseOrder(