How to override standard behavior of ApplicationTagLib#createLink and g:link?

Question

Background: I have grails 1.3.7 application which uses g:createLink and g:link on many pages.

Recently I decided to make b

Answer 1

add regionId to params in createLink and g:link and grails is smart enough to match your urlmappings. i.e

${createLink(controller:'c',action:'a',id:1,params:[regionId:2])}