Using an Ember Array to proxy to an ArrayController

gistfile1.txt

"use strict";

App.set('flashProxy', Ember.A());

App.FlashController = Ember.ArrayController.extend({
  itemController: 'flashObject'
  ,contentBinding: 'App.flashProxy'
});

App.FlashObjectController = Ember.ObjectController.extend({
  actions: {
    dismiss: function(flash) {
      var flashProxy = App.get('flashProxy')
          ,newList = _(flashProxy).reject(
            function(obj){
              var fId = flash.get('id')
                  ,oId = obj.get('id')
              ;
              return oId == fId;.
            }
          )
      ;
      App.set('flashProxy', newList);
      
      // this is a private method, but it does exactly what I want to happen
      //   ala, removes it from the local store and doesn't send a delete to the webserver
      flash.unloadRecord();
    }
  }
});

Changed from a delete and save to an unloadRecord, because I neither need nor want it communicated the the backend webserver.