router.js

var POS = require('lib/utilities/global');
var Router = require('lib/config/router');
var LayoutView = require('./layout');
var Products = require('./products/route');
var CartRoute = require('./cart/route');
var CheckoutRoute = require('./checkout/route');
var ReceiptRoute = require('./receipt/route');
var Radio = require('backbone.radio');
var bb = require('backbone');

var POSRouter = Router.extend({
  routes: {
    '(cart)(/:id)(/)'  : 'showCart',
    'checkout(/:id)(/)': 'showCheckout',
    'receipt(/:id)(/)' : 'showReceipt'
  },

  initialize: function(options) {
    this.container = options.container;
    this.channel.reply({
      'show:cart'     : this.showCart,
      'show:checkout' : this.showCheckout,
      'show:receipt'  : this.showReceipt,
      'add:to:cart'   : this.addToCart
    }, this);
  },

  onBeforeEnter: function() {
    this.layout = new LayoutView();
    this.container.show(this.layout);
    this.initOrders();
  },

  initOrders: function(){
    if(this.orders){ return; }

    // attach orders
    this.orders = Radio.request('entities', 'get', {
      type: 'collection',
      name: 'orders'
    });

    // listen to order collection
    this.listenTo(this.orders, {
      'add'    : this.addOrder,
      'remove' : this.removeOrder
    });
  },

  onBeforeRoute: function(){
    //this.setActiveTab();
    this.showProducts();
    Radio.request('header', 'update:title', '');
  },

  setActiveTab: function(){
    var tab = bb.history.getFragment() === '' ? 'left' : 'right';
    this.container.tabs.setActive(tab);
  },

  showProducts: function(){
    if( this.layout.getRegion('left').hasView() ){
      return;
    }
    var products = new Products({
      container : this.layout.getRegion('left')
    });
    products.enter();
  },

  showCart: function() {
    return new CartRoute({
      container : this.layout.getRegion('right'),
      collection: this.orders
    });
  },

  showCheckout: function() {
    return new CheckoutRoute({
      container : this.layout.getRegion('right'),
      collection: this.orders
    });
  },

  showReceipt: function() {
    var autoPrint = Radio.request('entities', 'get', {
      type: 'option',
      name: 'auto_print'
    });

    return new ReceiptRoute({
      container : this.layout.getRegion('right'),
      collection: this.orders,
      autoPrint : autoPrint
    });
  },

  /**
   * Add to cart only when cart route is active
   */
  addToCart: function(options){
    if(this._currentRoute instanceof CartRoute){
      this.orders.addToCart(options);
    }
  },

  addOrder: function(order){
    if(this._currentRoute instanceof CartRoute){
      //bb.history.navigate('cart/' + order.id);
      if(order.isEditable()){
        this.execute(this.showCart, [order.id]);
      }
    }
  },

  removeOrder: function(){
    if(this._currentRoute instanceof CartRoute){
      bb.history.navigate('');
      this.execute(this.showCart);
    }
  }

});

module.exports = POSRouter;
POS.attach('POSApp.Router', POSRouter);