Another method for redirection in index.gsp

   In the last blog I talked about how to redirection by useing Taglib method.another simple method is config your Url maping file

grails-app/conf/UrlMappings.groovy

class UrlMappings {

    static mappings = {

        "/"(controller:"race",action:"search")   //this is your index action.

        "/$controller/$action?/$id?" {

            constraints {

                // apply constraints here

            }

        }

    }

}