gistfile1.js

define([
    'vent',
    'marionette',
    'collections/widget',
    'layouts/index',
    'views/widget/collection'
], function (
    vent,
    Marionette,
    WidgetCollection,
    IndexLayout,
    WidgetCollectionView
) {
    "use strict";

    return Marionette.Controller.extend({
        initialize: function (options) {
            this.region = options.region;
        },
        index: function () {
            var layout = new IndexLayout();
            var collection = new WidgetCollection();

            this.region.show(layout);
            layout.widgets.show(
                new WidgetCollectionView({
                    collection: collection
                })
            );
            collection.fetch();

            setInterval(function () {
                vent.trigger('refresh:widgets');
            }, 1000);
        }
    });
});