gistfile1

define([
    'marionette',
    'collections/client/tab',
    'views/tab/model'
], function (Marionette, TabCollection, TabModelView) {
    "use strict";

    return Marionette.CollectionView.extend({
        initialize: function (options) {
            this.setSelected(options.id);
            this.on('itemview:click', this.setSelected);
        },
        collection: new TabCollection([
            {id: 'learners', text: 'Learners Tab'},
            {id: 'groups', text: 'Groups Tab'}
        ]),
        itemView: TabModelView,
        tagName: 'ul',
        setSelected: function (id) {
            this.collection.set('selected', childView.model.id);
        }
    });
});