输出结果给用户

Question

我正在写一个电报机器人。有一段工作代码响应来自用户的消息，搜索关键字匹配数据库并将结果发送给用户。问题是样本结果进入控制台，如何将其发送给用户？请帮忙

             bot.on('message', (ctx) => {
                const text = ctx.text
                const log = sequelize.query("SELECT book FROM books t WHERE (t.*)::text LIKE '%"+ text +"%'") .then( (result) => {
                    console.log(result,log)
                }) .catch( (err)  => {
                    console.log(err);
                    for (const result of results) {
                        ctx.reply(result.book);
                    }
                })
            })

Answer 1

基于sendMessage api 和message 中的数据，您的代码应如下所示：

const { QueryTypes } = sequelize;

bot.on('message', async (message) => {
  const {text, chat} = message; // https://core.telegram.org/bots/api#message
  const {id: chatId} = chat; // https://core.telegram.org/bots/api#chat
  
  let response = '';

  try {
    const rows = await sequelize.query(
      'SELECT book FROM books t WHERE (t.*)::text LIKE :searchText', 
      {
        replacements: { searchText: `%${text}%` },
        type: QueryTypes.SELECT,
      }
    );
    
    console.log('ROWS:', rows);

    if (rows.length) {
      response = rows.map(row => row.book).join("\n");
    }
    else {
      response = 'Book not found';
    }
  }
  catch (error) {
    console.error(error.message);
    response = 'Unable to lookup';
  }
  finally {
    if (response) {
      bot.sendMessage(chatId, response);
    }
  }
})

查看手册：

1. sendMessage
2. Message object
3. Chat object
4. Sequelize replacements