How to send followup message in Slack App using slack_bolt?

Question

I am building a bot that will answer a question asked in a slack App.

I want to configure a followup question

Note: Yes and No are radio buttons

eg.

User: What is the event date?
Bot: 22nd Feb, 2023
(after the answer bot will trigger followup question with radio buttons)
Bot: Does this answer your query?
 - Yes
 - No

Here's my code

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)

I also tried appending the followup message in the response and update it on ACK but updating doesn't handle the formatting, it treats the message as plain text.

Answer 1

The following code should work:

@app.message('')
async def in_message(say, message):
    if 'event' in message['text']:
        response = '22nd Feb, 2023'
        block = [
                    {
                        "type": "input",
                        "element": {
                            "type": "radio_buttons",
                            "options": [
                                {
                                    "text": {
                                        "type": "plain_text",
                                        "text": "Yes",
                                        "emoji": True
                                    },
                                    "value": "value-0"
                                },
                                {
                                    "text": {
                                        "type": "plain_text",
                                        "text": "No",
                                        "emoji": True
                                    },
                                    "value": "value-1"
                                }
                            ],
                            "action_id": "radio_buttons-action"
                        },
                        "label": {
                            "type": "plain_text",
                            "text": "Does this answer your query?",
                            "emoji": True
                        }
                    }
                ]
        await say(text = response)
        await say(blocks = block)
    else:
        return