lazo: base controller that loads data before executing action

gistfile1.js

// application base controller that resides at app/ctl.js
define(['lazoCtl'], function (LazoCtl) {

    'use strict';

    return LazoCtl.extend({

        models: ['defaultModel1', 'defaultModel2'],

        loadModels: function (callback) {
            for (var i = 0; i < models.length; i++) {
                (function (i){
                    // call this.loadModel for each model in this.models
                    // then execute callback passing error or success accordingly
                    callback(null, true); // node style callback
                })(i);
            }
        },

        index: function (options) {
            var self = this;

            this.loadModels(function (err, success) {
                if (err) {
                    return options.error(err);
                }

                options.success('index');
            });
        }

    });

});

// use base controller
define(['app/ctl'], function (BaseCtl) {

    return BaseCtl.extend({

        // override base property
        // if you still want to load the default models 
        // then do this instead: BaseCtl.prototype.slice(0).concat(['differentModel1', 'differentModel2', 'differentModel3'])
        models: ['differentModel1', 'differentModel2', 'differentModel3'],


        // optional; only needed if you want to do something before 
        // calling the index action
        index: function (options) {
            this.loadModels(function (err, success) {
                if (err) {
                    return options.error(err);
                }

                options.success('index');
            });
        }
    });

});