feat: 好像不能将额外的信息放在ToolMessage中

app/controller/add_langgraph_chat_route.py

@@ -22,7 +22,13 @@ from app.utils.postgres_checkpointer import PostgresCheckpointerManager, AsyncPo
   description="一个用于获取当前时间的工具，没有参数"
 )
 def tool_get_datetime():
-  return datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
+  return {
+    "result": f"当前时间为：{datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')}",
+    "render": {
+      "type": "DataTable"
+    }
+  }
+
 
 
 @tool(
@@ -88,7 +94,7 @@ def tool_book_hotel() -> str:
   if resume_data == "N":
     return f"用户选择取消预定酒店"
 
-  return "预定成功"
+  return ToolMessage(content="预定成功", additional_kwargs={"render": {"type": "DataTable"}})
 
 
 class ChatMessage(BaseModel):
@@ -200,6 +206,7 @@ def add_langgraph_chat_route(app: FastAPI):
             emit_chunk["tool_calls"] = chunk_message.tool_calls
         elif isinstance(chunk_message, ToolMessage):
           emit_chunk["tool_name"] = chunk_message.name
+          emit_chunk["additional_kwargs"] = chunk_message.additional_kwargs
 
         result_template["choices"][0]["delta"]['content'] = emit_chunk
         result_template["choices"][0]["delta"]['role'] = 'assistant'