saas-platform/frontend/saas-web/app/view/main/MainModel.js

/**
 * This class is the view model for the Main view of the application.
 */
Ext.define('saas.view.main.MainModel', {
    extend: 'Ext.app.ViewModel',

    alias: 'viewmodel.main',

    data: {
        navWidth: 160,
        smallNavWidth: 64,
    },

    stores: {
        navMenu: {
            model: 'saas.model.main.NavMenu',
            autoLoad: true,
            proxy: {
                type: 'ajax',
                url: 'resources/json/navigation.json',
                reader: {
                    type: 'json'
                }
            }
        }
    }
});