From a87bba93c2d161989cdefce8fbee385b166f2079 Mon Sep 17 00:00:00 2001
From: Eternity <1533512157@qq.com>
Date: Wed, 8 Apr 2026 11:23:40 +0800
Subject: [PATCH] fix(app_chat_service): modify file handling in message
 construction

---
 api/app/services/app_chat_service.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/api/app/services/app_chat_service.py b/api/app/services/app_chat_service.py
index 61a906d2..fb4955b3 100644
--- a/api/app/services/app_chat_service.py
+++ b/api/app/services/app_chat_service.py
@@ -234,7 +234,7 @@ class AppChatService:
             file_list = []
             for file in files:
                 file_dict = file.model_dump()
-                file_dict["upload_file_id"] = str(file_dict["upload_file_id"])
+                file_dict["upload_file_id"] = str(file_dict["upload_file_id"]) if file_dict["upload_file_id"] else None
                 file_list.append(file_dict)
             messages = [
                 {"role": "user", "content": message, "files": file_list},
@@ -514,7 +514,7 @@ class AppChatService:
                 file_list = []
                 for file in files:
                     file_dict = file.model_dump()
-                    file_dict["upload_file_id"] = str(file_dict["upload_file_id"])
+                    file_dict["upload_file_id"] = str(file_dict["upload_file_id"]) if file_dict["upload_file_id"] else None
                     file_list.append(file_dict)
                 messages = [
                     {"role": "user", "content": message, "files": file_list},