How to return value from collection.find()?

Question

MongoDB

var shortLinks = [];

    Link.find({}).exec(function (err, links) {

        if (err) {
            console.log(err);

        } else {

            links.map(link => {
                shortLinks.push(link.shortLink);
            });
        }
    });
    console.log(shortLinks); // тут массив пустой

When calling an array within find(), it is filled and everything is ok, but how to return it so that it becomes available outside of find

Answer 1

exec() will return a Promise and process it.

var shortLinks = Link.find().exec();
// ...

shortLinks.then(function(links){
  // work with links
}, function(err){
  // some error
});