title: Ember multiple instance of controllers
body: <p>I've been using Ember for a while but still struggling sometimes to find out the best practices. So one of the Ember ways regarding controller and view is </p>
  
  <blockquote>
    <p>an opinion of Ember's designers, that is enforced by the router is that for a given BaseName (e.g. "Application," "CustomerEntry," "My Items") there should be a BaseNameView and a BaseNameController.  -- <a href="http://emberjs.com/guides/router_primer/#toc_views-are-tightly-coupled-to-their-controllers">Ember guide</a></p>
  </blockquote>
  
  <p>The problem is that what if I want multiple instances of the same view on a page. Since the controller is created during initiation of the application, they are singletons under the application namespace, which will not be able to hold two instances of the model data. </p>
  
  <p>One solution I see is to create controllers(and model data) manually and pass them to views. But in this case, I'd like Ember not create controllers automatically for me. Put it another way, why would Ember creates controllers as singletons during application startup. </p>