Sequelize: How to access [object Promise] or return value from promise?

Question

I have a situation where I want to access the user data only if he or she is logged in. I have the following code that works when I'm not querying the database. Meaning the var tmp is set to YOUR_API_KEY . But when querying the database, I get [object Promise]. I tried different solutions after googling around, but nothing seams to solve my question.

var tmp = function() {

   if(req.session.user) {

      return User.findOne({
         where: {
                    id: req.session.user.userID
                },
                include: [
                    { model: Apikey }
                ]
            }).then(function(sqlUser) {
                return sqlUser.Apikeys['0'].kay;
            });

        } else {
            return "YOUR_API_KEY"
        }
}

Answer 1

Use "callbacks"

var tmp = function(callback) {
  if(req.session.user) {
    return User.findOne({
      where: {
              id: req.session.user.userID
            },
            include: [
              { model: Apikey }
            ]
    }).then(function(sqlUser) {
      callback(sqlUser.Apikeys['0'].kay)
    });
  } else {
    callback("YOUR_API_KEY")
  }
}

//now you can use your function like this
tmp(function(apiKey){
  //do something with apiKey e.g.:
  console.log(apiKey)
});