title: How to implement permission-based access control in Grails?
body: <p>I want to implement permission-based access control <a href="http://springinpractice.com/2010/10/27/quick-tip-spring-security-role-based-authorization-and-permissions/" rel="nofollow">as discussed in this post</a>.</p>
  
  <p>I am not familiar with the implementation - is there any detailed example on how to implement this from start to finish? </p>