Sequelize how to check if entry exists in database

Question

I need to check if entry with specific ID exists in the database using Sequelize in Node.js

  function isIdUnique (id) {
    db.Profile.count({ where: { id:          


        

Answer 1

As Sequelize is designed around promises anyway, alecxe's answer probably makes most sense, but for the sake of offering an alternative, you can also pass in a callback:

function isIdUnique (id, done) {
    db.Profile.count({ where: { id: id } })
      .then(count => {
        done(count == 0);
      });
  }
}

isIdUnique(id, function(isUnique) {
  if (isUnique) {
    // stuff
  }
});