backbone.Broker

• Pub/Sub event aggregator based on channels
• Application wide singleton

Channels

var broker = require('broker');
var channel = broker.channel('session');

broker.channel

• Retrieves or creates a channel

Subscribe

var broker = require('broker');
broker.channel('session').subscribe('login', function(){
    ...
});

Subscribing to events on a channel

Publish

var broker = require('broker');
var view = new Backbone.View();

broker.channel('session').publish('show',view);

Publish an event to a channel

Dos and Don'ts

Do

• Send events between independent modules

Don't

• To replace existing model, collection and view events

Backbone.Unloader

• Dynamically load and unload routes
• Limit access to routes based on user rights
• Can be triggered based on broker events

Route Setup

var router = Backbone.Router.extend({
    initialize: function(){
        broker.channel('session').subscribe('login', function(){

            this.loadRoutes({
                'home': 'showHome',
                'user/:id': 'showUser'
            });

        }.bind(this));
    }
});

Load routes on logon

Unloading

var router = Backbone.Router.extend({
    initialize: function(){
        broker.channel('session').subscribe('logoff', function(){

            this.unloadRoutes();

        }.bind(this));
    }
});

Make sure all routes are unloaded at logoff