Rails 3.2.8没有触发ajax回调

I'm having problems with rails 3.2.8 and ajax callbacks... it seems those are not firing at all... I've tried binding with Jquery code (I can see the js script on the chrome toolbox) and I've even tried putting the :success => 'alert("bla")' on the link_to line, but it still doesn't do anything... the controller works since my row is actually deleted... but can't bindd to the callbacks! please help!I'm having problems with rails 3.2.8 and ajax c