lettuce/learning/backbone.marionette.approuter.js

Lettuce JS, Mini Mobile Framework for Romantic with DSL.

// AppRouter
// ---------

// Reduce the boilerplate code of handling route events
// and then calling a single method on another object.
// Have your routers configured to call the method on
// your object, directly.
//
// Configure an AppRouter with `appRoutes`.
//
// App routers can only take one `controller` object. 
// It is recommended that you divide your controller
// objects in to smaller peices of related functionality
// and have multiple routers / controllers, instead of
// just one giant router and controller.
//
// You can also add standard routes to an AppRouter.

Marionette.AppRouter = Backbone.Router.extend({

  constructor: function(options){
    Backbone.Router.prototype.constructor.call(this, options);

    if (this.appRoutes){
      var controller = this.controller;
      if (options && options.controller) {
        controller = options.controller;
      }
      this.processAppRoutes(controller, this.appRoutes);
    }
  },

  // Internal method to process the `appRoutes` for the
  // router, and turn them in to routes that trigger the
  // specified method on the specified `controller`.
  processAppRoutes: function(controller, appRoutes){
    var method, methodName;
    var route, routesLength, i;
    var routes = [];
    var router = this;

    for(route in appRoutes){
      if (appRoutes.hasOwnProperty(route)){
        routes.unshift([route, appRoutes[route]]);
      }
    }

    routesLength = routes.length;
    for (i = 0; i < routesLength; i++){
      route = routes[i][0];
      methodName = routes[i][1];
      method = controller[methodName];

      if (!method){
        var msg = "Method '" + methodName + "' was not found on the controller";
        var err = new Error(msg);
        err.name = "NoMethodError";
        throw err;
      }

      method = _.bind(method, controller);
      router.route(route, methodName, method);
    }
  }
});