gistfile1.js

var Item = function () {
  this.defineProperties({
    name: {type: 'string'}
  });

  this.findByName = function (name, callback) {
    geddy.model.Item.all({name: name}, callback);
  }
}

Item.findByName = function (name, callback) {
  geddy.model.Item.all({name: name}, callback);
  // would this work?
  // this.all({name: name}, callback);
}