From 700c8dfa6f5c8c06d90bd89a2e7decedc8eca625 Mon Sep 17 00:00:00 2001
From: tt-P607 <68868379+tt-P607@users.noreply.github.com>
Date: Wed, 27 Aug 2025 18:16:51 +0800
Subject: [PATCH] =?UTF-8?q?fix(chat):=20=E5=A4=84=E7=90=86=E6=88=AA?=
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 =?UTF-8?q?=E7=9A=84=E6=83=85=E5=86=B5?=
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在 `truncate_message` 函数中，如果传入的 `message` 参数为 `None`，会导致 `len(message)` 抛出 `TypeError`。本次提交增加了对 `None` 值的检查，确保在处理 `None` 时函数能正常返回空字符串，从而提高代码的健壮性。
---
 src/chat/utils/utils.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/chat/utils/utils.py b/src/chat/utils/utils.py
index f9807b16a..5629a224b 100644
--- a/src/chat/utils/utils.py
+++ b/src/chat/utils/utils.py
@@ -449,6 +449,8 @@ def find_similar_topics_simple(text: str, topics: list, top_k: int = 5) -> list:
 
 def truncate_message(message: str, max_length=20) -> str:
     """截断消息，使其不超过指定长度"""
+    if message is None:
+        return ""
     return f"{message[:max_length]}..." if len(message) > max_length else message