Creating automatic response functionality for Telegram bots

Other Questions Telegram bot
1

I’m working on a Telegram bot that processes commands with parameters like /set-year 2023. The tricky part is handling cases where users send just /set-year without any parameter.

I noticed some bots like music search bots handle this really well. When you send /search without a query, they respond with something like “Which track do you want to find?” and then automatically set up a reply field at the bottom of the chat. This reply field is linked to their message, so when you type your response, it works exactly like you originally sent /search [your query].

This behavior seems to only work in group chats from what I can tell. I’m trying to figure out the technical approach behind this feature. My bot is built using Node.js with the telegraf library.

bot.command('set-year', (ctx) => {
  const yearValue = ctx.message.text.split(' ')[1];
  if (!yearValue) {
    // Need to implement auto-reply setup here
    ctx.reply('Please provide a year:');
  } else {
    processYear(yearValue);
  }
});

How can I implement this automatic reply preparation feature?

2

you need to use ctx.reply('Please provide a year:', { reply_markup: { force_reply: true } }) - the force_reply option creates that automatic reply field ur talking about. it works in both private and group chats btw, not just groups like u mentioned.

3

The force_reply feature is what you’re looking for, but there’s an additional step you might want to consider for better user experience. After setting up the force reply, you’ll need to handle the follow-up message properly. I usually store the user’s state or context so when they respond to the force reply, my bot knows it’s actually a delayed parameter for the original command. You can do this by saving the user ID and command type in a temporary storage like a Map or database, then check for pending commands when processing regular messages. This prevents confusion if users send other messages between the command and their reply.

4

To implement the automatic reply preparation feature, you should utilize the ForceReply markup in your bot’s response. Adjust your code as follows:

bot.command('set-year', (ctx) => {
  const yearValue = ctx.message.text.split(' ')[1];
  if (!yearValue) {
    return ctx.reply('Please provide a year:', {
      reply_markup: { force_reply: true }
    });
  }
  processYear(yearValue);
});

This way, when a user sends /set-year without a year, they will see a prompt with a reply field that is linked to this message, facilitating a smooth interaction.