Grails Resources setup that automatically adds all resources in a folder

AppResources.groovy

import org.codehaus.groovy.grails.web.context.ServletContextHolder as SCH

modules = {
core {
    resource url: '/resources/css/app.css', disposition: 'head'
    resource url: '/resources/css/myapp.css', disposition: 'head'
    resource url: '/extjs/ext-all-debug.js', dispostion: 'head'

    getFilesForPath('/app').each {
      resource url: it
    }

}
}
def getFilesForPath(path) {

def webFileCachePaths = []

def servletContext = SCH.getServletContext()

//context isn't present when testing in integration mode. -jg
if(!servletContext) return webFileCachePaths

def realPath = servletContext.getRealPath('/')

def appDir = new File("$realPath/$path")

appDir.eachFileRecurse {File file ->
    if (file.isDirectory()) return
    webFileCachePaths << file.path.replace(realPath, '')
}

webFileCachePaths
}