gistfile1.js

$.ajaxSetup({
    statusCode : {
        //403 should mean they don't have a session, however if we
        //throw 403s for more granular pressision checks, we'll want
        //to do some further checking here to see if the session is
        //indeed invalid before showing the session expiry dialog
        //and bouncing them to the landing page
        403: function() {
          var route = container.lookup('route:application');
          var sessionController = container.lookup('controller:session');
          var modalController = container.lookup('controller:message-modal');
          modalController.set('onClose', function() {
            //we know their session has expired, so update the UI
            sessionController.send('loggedOut');
          });
          route.render('message-modal', {
            into: 'application',
            outlet: 'modal',
            model: {
              title: Ember.I18n.t('sessionTimeout.title'),
              message: Ember.I18n.t('sessionTimeout')
            }
          });
        },