title: grails clean way to replace null values with empty string
body: <p>In Grails, what is the cleanest way to convert null domain fields to empty string "" for example when returning a list from controller to view. Because i have many allowed nullable fields, all these "null" values are visible in my table on the gsp. </p>
  
  <p>Is there a shorthand for this or should i add a javascript method on the view that will replace all "null" with empty string?</p>