How to show objects by categories through the 2GIS widget on the site?

Question

JavaScript

Hello everyone, there is an idea to make such a block on the site. The essence of its work is to display the selected category on the map. But it is not clear whether this can be done? I looked at the API and did not find it in the current documentation. Found something similar but in version 1.
A picture that explains the idea

Answer 1

You are confusing synchronous and asynchronous code, calling bot.telegram.getChat() immediately returns a Promise and your code has already sent a response. Here's how to do it:

app.get('/chat/:chat', (req, res) => {
    const chat = req.params.chat;
    const json = {};

    bot.telegram.getChat(chat).then((info) => {
        json.success = true;
        json.info = info;

        res.json(json);
    }).catch((error) => {
        json.success = false;
        json.info.error = error.code;
        json.info.method = error.on.method;
        json.info.description = error.description;

        res.json(json);
    });
});

Or how to do it in a modern way:

app.get('/chat/:chat', async (req, res) => {
  const { chat } = req.params;
  const json = {};

  try {
    const info = await bot.telegram.getChat(chat);

    json.success = true;
    json.info = info;
  } catch (error) {
    json.success = false;
    json.info.error = error.code;
    json.info.method = error.on.method;
    json.info.description = error.description;
  }

  res.json(json);
});