title: Rails: "Next post" and "Previous post" links in my show view, how to?
body: <p>I'm new in Rails... smile</p>
  
  <p>In my blog aplication I want to have a "Previous post" link and a "Next post" link in the bottom of my show view.</p>
  
  <p>How do I do this?</p>
  
  <p>Thanks!</p>