如何使用slack_bolt在Slack App中发送带单选按钮的跟进消息？

我正在构建一个Slack App机器人，用于回答用户提出的问题。希望配置一个带单选按钮（Yes/No）的跟进问题，示例如下：

User: What is the event date?
Bot: 22nd Feb, 2023
(回答后机器人触发带单选按钮的跟进问题)
Bot: Does this answer your query?

• Yes
• No

我的代码如下：

import asyncio
from slack_bolt.adapter.socket_mode.async_handler import AsyncSocketModeHandler
from slack_bolt.async_app import AsyncApp
from slack_sdk import WebClient


client = WebClient(token=SLACK_BOT_TOKEN)
app = AsyncApp(token=SLACK_BOT_TOKEN)


# This event will be executed when User sends the message
@app.message('')
async def in_message(say, message):
    if 'event' in message['text']:
        response = '22nd Feb, 2023'
        block = []

    await say(text=response, blocks=block)

我尝试在响应中追加跟进消息并通过ACK更新，但更新无法处理格式，消息会被当作纯文本。

Slack的交互式元素（如单选按钮）必须通过Blocks结构定义，不能用纯文本格式实现。以下是修改后的代码，实现先发送回答，再发送带单选按钮的跟进提问，并处理用户的选择：

import asyncio
from slack_bolt.adapter.socket_mode.async_handler import AsyncSocketModeHandler
from slack_bolt.async_app import AsyncApp
from slack_sdk import WebClient

# 替换为你的实际令牌
SLACK_BOT_TOKEN = "your-bot-token"
SLACK_APP_TOKEN = "your-app-token"

client = WebClient(token=SLACK_BOT_TOKEN)
app = AsyncApp(token=SLACK_BOT_TOKEN)

# 处理用户消息，返回事件日期并发送跟进提问
@app.message('')
async def in_message(say, message):
    if 'event' in message['text'].lower():
        # 先发送事件日期回答
        await say(text='22nd Feb, 2023')
        
        # 构建包含单选按钮的Blocks结构
        follow_up_blocks = [
            {
                "type": "section",
                "text": {
                    "type": "mrkdwn",
                    "text": "*Does this answer your query?*"
                }
            },
            {
                "type": "actions",
                "elements": [
                    {
                        "type": "radio_buttons",
                        "options": [
                            {
                                "text": {"type": "plain_text", "text": "Yes"},
                                "value": "feedback_yes"
                            },
                            {
                                "text": {"type": "plain_text", "text": "No"},
                                "value": "feedback_no"
                            }
                        ],
                        "action_id": "feedback_radio_btn"
                    }
                ]
            }
        ]
        
        # 发送带单选按钮的跟进提问
        await say(blocks=follow_up_blocks, text="Does this answer your query?")

# 处理用户点击单选按钮的反馈
@app.action("feedback_radio_btn")
async def handle_feedback(ack, body, say):
    await ack()  # 必须确认Slack的请求
    selected_option = body["actions"][0]["selected_option"]["value"]
    
    if selected_option == "feedback_yes":
        await say("Great to hear that! 😊")
    else:
        await say("Sorry that didn't help. Could you tell me what more you need to know?")

async def main():
    handler = AsyncSocketModeHandler(app, SLACK_APP_TOKEN)
    await handler.start()

if __name__ == "__main__":
    asyncio.run(main())

关键说明 #

1. Blocks结构：用section块展示提问文本，actions块包含radio_buttons交互式元素，每个选项对应唯一的value和统一的action_id，用于后续识别用户选择。
2. 分消息发送：先发送纯文本回答，再发送带Blocks的跟进提问，避免内容混杂。
3. Action处理：添加@app.action装饰器监听单选按钮的点击事件，必须先调用ack()确认请求，再根据用户选择返回对应回复。
4. 令牌替换：记得将代码中的SLACK_BOT_TOKEN和SLACK_APP_TOKEN替换为你自己的Slack令牌。

内容的提问来源于stack exchange，提问作者Sociopath