SugarSkull router on Leave

gistfile1.js

apciMobile.Router = Router({
    '/login': function () {
      new apciMobile.loginPageView({
        el: $('#content')
      });
    },
    '/home': function(){
      var gridView = new apciMobile.gridView({
        el: $('#content'),
        collection: apciMobile.grid
      });
    },//home
    '/logout' : function (){
      apciMobile.logout();
    },//logout
    '/groups' : {
      on: function () {
        var groupView = new apciMobile.groupsPageView({
          el: $('#content'),
          collection: apciMobile.userGroups
        });
      },
      leave: function(){
        console.log('LEAVING');
      }
    }
  });//router
  apciMobile.Router.init();
  if (window.location.hash === ""){
    apciMobile.Router.setRoute('/home');
  }