Sequelize model mixins

sequelize-mixins.js

var User = sequelize.define('User', {
  name: Sequelize.STRING
}, {
  // define the mixins you want to include
  // could be similar to sequelize.import()
  mixins: [
    'CreatedAt',
    ...
  ]
] });

// mixin definition
var CreatedAt = {
  // if this was some sort of default in the model
  beforeSave: function() {  
    this.call('setCreatedAt');
  },
  
  setCreatedAt: function() {
    this.setDataValue('createdAt', Utils.now());
  }
};