live.js

  var fayeClient = new Faye.Client('/faye');

  var LiveCollection = Backbone.Collection.extend({
    constructor: function(models, options) {
      Backbone.Collection.prototype.constructor.call(this, models, options);

      this.subscription = fayeClient.subscribe(this.url, this._fayeEvent, this);
    },

    _fayeEvent: function(message) {
      var method = message.method;
      var body = message.body;

      switch(method) {
        case 'POST':
          this._createEvent(body);
          break;

        case 'PUT':
          this._updateEvent(body);
          break;

        case 'DELETE':
          this._removeEvent(body);
          break;

        default:
          ...
      }
    },

    ...
  });