Sequelize classMethods vs instanceMethods

Question

So starting my adventure into all things Node. One of the tools I am trying to learn is Sequelize. So I will start off what I was trying to do:

Answer 1

All the method who don't modify or check any type of instance should be classMethod and the rest instanceMethod

ex:

// Should be a classMethods
function getMyFriends() {
  return this.find({where{...}})
}

// Should be a instanceMethods
function checkMyName() {
  return this.name === "george";
}

Answer 2

I found this worked for me as of sequelize 3.14

var myModel = sequelize.define('model', {

}, {
  classMethods: {
    someClassMethod: function() {
      return true;
    }
}, {
  instanceMethods: {
    callClassMethod: function() {
      myModel.someClassMethod();
    }
  }
});

Answer 3

Although the basics are that instance methods should be used when you want to modify your instance ( ergo row ). I would rather not pollute the classMethods with methods that don't use the class ( ergo the table ) itself.

In your example I would put hashPassword function outside your class and leave it as a helper function somewhere in my utilities module ( or why not the same module but as a normal defined function ) ... like

var hashPassword = function(...) { ... }

...

...

  instanceMethods: { 
     authenticate: function( ... ) { hashPassword( ... ) }
  }