title: Helper methods to be used in Controllers AND Views in Rails
body: <p>I understand I can put a helper method in a <code>Helper</code> class inside the <code>helper</code> folder in Rails. Then that method can be used in any view. And I understand I can put methods in the <code>ApplicationController</code> class and that method can be used in any controller.</p>
  
  <p>Where's the proper place to put a method that is frequently used in both controllers and views?</p>