Again this Promis?

Question

JavaScript

I have this model:

connection = require('../lib/mysql');
var info = {};
var getBalance = function(id) {
  return new Promise(function(resolve, reject){
      connection.query('SELECT balance FROM Users WHERE id = ?', id, function(error, result, fields) {
      	if(error)
      		reject(error);
          if(result[0]['balance'])
              resolve(result[0]['balance']);
          reject();
      });
  });
};
info.getBalance = function(id) {
  getBalance(id).then(function(data){
    console.log(data);
    return data;
  });
}
module.exports = info;

In another file I do:

var model = require('./model');
console.log(model.getBalance(123123));

And he gives me underfind, although console.log (data) displays the desired result in that file. How to avoid it?

Answer 1

You forgot to return a promise

info.getBalance = function(id) {
  return getBalance(id).then(function(data){
    console.log(data);
    return data;
  });
}