title: How to insert link to controller action in Play framework 2.0 template
body: <p>If I have an action <code>Application.show(tag: String)</code>, and also have a corresponding routing entry, how can I insert a link to this action to a template without crafting the url manually?</p>
  
  <p>I would like to do something like <code>magiclink(Application.show("tag"))</code>.</p>