title: How do i require a helper file in presenter - rails
body: <p>I have a rails application. I need to use a helper within a presenter class. I used
  <code>require 'number_helper'</code> and used a method 'test' from 'number_helper'. It is giving me an error that <code>'undefined method 'test''</code>. </p>
  
  <p>How do I require a helper file in a presenter class. If I use <code>'include NumberHelper'</code> it works. what is the wrong with my usage of 'require'</p>