How to make my URL mapping case insensitive?

Question

Grails, by default, is case-sensitive when mapping URL to controller actions or views.

For instance, www.mywebsite.com/book/list will work BUT www.mywebsite.com/Boo

Answer 1

Aaron Saunders has as great solution here, but his site was blocked for me. Here is his fantastic solution. Confirmed it works great in Grails 2.x.

import org.codehaus.groovy.grails.commons.GrailsClass

class UrlMappings {

    def grailsApplication

    static mappings = {
        "/$controller/$action?/$id?"{
            constraints {
                // apply constraints here
            }
        }
        //Case InSeNsItIvE URLS!!!
        "/$_ctrl/$_action/$id?" {
            controller = {

                def foundControllerMatch = false
                def returnCtrl = params._ctrl   

                grailsApplication.controllerClasses.each { GrailsClass c ->
                    def l_className = c.name.toLowerCase()

                    // find the class
                    if (params._ctrl?.equalsIgnoreCase(l_className) && foundControllerMatch == false) {
                        foundControllerMatch = true
                        returnCtrl = c.getLogicalPropertyName()
                        //println " foundControllerMatch ${returnCtrl}"
                    }
                }

                return returnCtrl
            }

            action = {

                def foundActionMatch = false
                def returnAction = params?._action
                def returnCtrl = params._ctrl

                grailsApplication.controllerClasses.each { GrailsClass c ->
                    def l_className = c.name.toLowerCase()

                    // find the class
                    if (params._ctrl?.equalsIgnoreCase(l_className) && foundActionMatch == false) {

                        returnCtrl = c.name

                        c.URIs.each { _uri ->

                            if (foundActionMatch == false) {
                                def uri = _uri

                                //println "u-> $uri"

                                def uri_action
                                uri_action = uri.split('/')[2]

                                //println "uri_action-> $uri_action"
                                if (uri_action?.trim()?.equalsIgnoreCase(params._action.trim())) {
                                    foundActionMatch = true
                                    returnAction = uri_action
                                }
                            }
                        }
                    }
                }

                return returnAction

            }

        }
    }
}