Example route listener

RouteListener.js

App.module("BreadcrumbApp", function(BreadcrumbApp, App, Backbone, Marionette, $, _){

  var API = {
    showProject: function(id){
      new BreadcrumbApp.Show.Controller({
        /* Stuff */
      });
    },
    
    showUser: function(id){
      new BreadcrumbApp.Show.Controller({
        /* Stuff */
      });
    }
  };
  
  // could be App.history or whatever
  Backbone.history.on("route", function(router, routeName, args){
    if(API[routeName]){
      API[routeName].apply(API, args);
    } else {
      console.warn("Route not handled");
    }
  });

});


// In another file

App.module("ProjectApp", function(ProjectApp, App, Backbone, Marionette, $, _){
  
  var API = {
    showProject: function(id){
      /* do stuff */
    }
  };
  
  ProjectApp.Router = Marionette.AppRouter.extend({
    appRoutes: {
      "project/:id" : "showProject"
    }
  });
  
  App.addInitializer(function(){
    new ProjectApp.Router({
      controller: API
    })
  });

});


// In yet another file

App.module("UserApp", function(UserApp, App, Backbone, Marionette, $, _){
  
  var API = {
    showUser: function(id){
      /* do stuff */
    }
  };
  
  UserApp.Router = Marionette.AppRouter.extend({
    appRoutes: {
      "user/:id" : "showUser"
    }
  });
  
  App.addInitializer(function(){
    new UserApp.Router({
      controller: API
    })
  });

});