service dependency injection does not work in scaffolded controllers

When I wanted to access user information in the scaffolding code of the controller (/src/scaffolding/Controller.groovy) my first guess was to define the authenticateService and let dependency injection do the trick. Unfortunately, this approach did not work.

def authenticateService is never injected and therfore a useless null object.

I spent some time on google and it turned out that this is an open issue and that others had stumbled about the same problem. I was happy to see that someone had found a workaround:

def authenticateService = org.codehaus.groovy.grails.commons.ApplicationHolder.application.mainContext.getBean("authenticateService")

Using this approach arbitrary services can be injected into the scaffolded controllers.