title: Use cases for the different Padrino haml helpers
body: <p>I read <a href="http://www.padrinorb.com/guides/application-helpers" rel="noreferrer">http://www.padrinorb.com/guides/application-helpers</a> but I'm unclear as to what are the use cases for each of the view helpers. Specifically, how do <code>content_for/yield_content, render/partial, capture_html, and concat_content</code> all fit together? </p>
  
  <p>Right now I've been using <code>render 'my/view'</code> in my controllers and throwing in some <code>=partial 'my/partial'</code> within <code>'my/view'</code> just to break apart the main template file into smaller chunks. </p>
  
  <p>Is the right way to go about it? And when/where would I want to use the other helper functions?</p>