Grails UrlMapping Redirect to keep DRY - grails

Question

I am working with Grails 2.1.1 and would like to add a handful of customized URLs that map to Controller Actions.
I can do that, but the original mapping still works.
For example, I created a mapping add-property-to-directory in my UrlMappings as follows:
class UrlMappings {
static mappings = {
"/add-property-to-directory"(controller: "property", action: "create")
"/$controller/$action?/$id?"{
constraints {
// apply constraints here
}
}
"/"(view:"/index")
"500"(view:'/error')
}
}
Now, I can hit /mysite/add-property-to-directory and it will execute PropertyController.create, as I would expect.
However, I can still hit /mysite/property/create, and it will execute the same PropertyController.create method.
In the spirit of DRY, I would like to do a 301 Redirect from /mysite/property/create to /mysite/add-property-to-directory.
I could not find a way to do this in UrlMappings.groovy. Does anyone know of a way I can accomplish this in Grails?
Thank you very much!
UPDATE
Here is the solution that I implemented, based on Tom's answer:
UrlMappings.groovy
class UrlMappings {
static mappings = {
"/add-property-to-directory"(controller: "property", action: "create")
"/property/create" {
controller = "redirect"
destination = "/add-property-to-directory"
}
"/$controller/$action?/$id?"{
constraints {
// apply constraints here
}
}
"/"(view:"/index")
"500"(view:'/error')
}
}
RedirectController.groovy
class RedirectController {
def index() {
redirect(url: params.destination, permanent: true)
}
}

Answer 1

It is possible to achieve this:
"/$controller/$action?/$id?" (
controller: 'myRedirectControlller', action: 'myRedirectAction', params:[ controller: $controller, action: $action, id: $id ]
)
"/user/list" ( controller:'user', action:'list' )
and in the action you get the values normallny in params:
log.trace 'myRedirectController.myRedirectAction: ' + params.controller + ', ' + params.action + ', ' + params.id

Answer 2

As of Grails 2.3, it is possible to do redirects directly in the UrlMappings, without the need for a redirect controller. So in case you ever upgrade, you can redirect in UrlMappings like so, as per the documentation:
"/property/create"(redirect: '/add-property-to-directory')
Request parameters that were part of the original request will be included in the redirect.

Answer 3

In recent Grails version (currently 5.x) you need to pass a Map into the redirect: property:
"/viewBooks"(redirect: [uri: '/add-property-to-directory'])
https://docs.grails.org/latest/guide/theWebLayer.html#redirectMappings