gistfile1

define([
    'marionette',
    'views/layouts/groups',
    'views/group/collection',
    'views/learner/collection',
    'collections/api/group',
    'collections/api/learner'
], function (
    Marionette,
    GroupsLayout,
    GroupCollectionView,
    LearnerCollectionView,
    GroupCollection,
    LearnerCollection
) {
    //"use strict";

    return Marionette.Controller.extend({
        initialize: function (options) {
            this.region = options.region;
            this.layout = new GroupsLayout();
        },
        showGroups: function (selectedGroupId) {
            // TODO: Use selectedGroupId to select group.
            var collection = new GroupCollection();

            this.region.show(this.layout);
            this.layout.groups.show(
                new GroupCollectionView({
                    collection: collection
                })
            );
            collection.fetch();
        },
        showLearners: function (groupId) {
            var collection = new LearnerCollection({groupId: groupId});

            // Handle direct linking from another hash.
            if (this.layout.isClosed) {
                this.layout.render();
            }
            // Handle fresh page load.
            if (!this.layout.groups.currentView) {
                this.showGroups(groupId);
            }
            this.layout.learners.show(
                new LearnerCollectionView({
                    collection: collection
                })
            );
            collection.fetch();
        }
    });
});