From cabc3c3442cfcd8f6fbe9946acef2db380a6c94e Mon Sep 17 00:00:00 2001
From: yuliang_guo <anonymous@qq.com>
Date: Sat, 31 Jan 2026 17:13:00 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=E7=BB=83=E4=B9=A0?=
 =?UTF-8?q?=E7=BB=93=E6=9D=9F=E6=97=B6=E7=9A=84DetachedInstanceError?=
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- 在第二次commit后refresh session对象
- 避免异步session管理导致的对象脱离错误
---
 backend/app/api/v1/practice.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/backend/app/api/v1/practice.py b/backend/app/api/v1/practice.py
index a8887f2..aa1e3a9 100644
--- a/backend/app/api/v1/practice.py
+++ b/backend/app/api/v1/practice.py
@@ -724,8 +724,15 @@ async def end_practice_session(
             new_badges = await badge_service.check_and_award_badges(current_user.id)
             
             await db.commit()
+            # 第二次commit后需要refresh，避免DetachedInstanceError
+            await db.refresh(session)
         except Exception as e:
             logger.warning(f"练习经验值/奖章处理失败: {str(e)}")
+            # 确保 session 仍然可用
+            try:
+                await db.refresh(session)
+            except Exception:
+                pass
         
         return ResponseModel(
             code=200,