title: How to show or hide fields on a GSP based on a selection in a combo-box
body: <p>I'm still new to grails, so I'm really sorry for asking something like this.</p>
  
  <p>I have a domain that could be divided in 3 types, so I'd like to create a combo-box and depending on which selection the user made, it will show some fields and hide others. How can I achieve this?</p>
  
  <p>Thanks again and sorry for this dumb question.</p>