Question

I’m writing a small webapp in Grails, and to make sure all users are authenticated I’m using the following filter:

class LoginFilters {   static filters = {     loginCheck(controller:'*', action:'*') {       before = {         if (session.user_id) {           request.user = User.get(session.user_id)         } else if (!actionName.equals('login')) {           redirect(controller: 'login', action: 'login')           return false         }       }     }   } } 

And all controller methods start with reading the user property of the request object:

def actionName = {    def user = request.user    ... } 

The code above works, but I’d rather avoid the duplicate code in the all controller methods. Would it be possible for the filter to bind the user object to a variable named ‘user’ instead of ‘request.user’, that will be accessible from all controllers?

I understand that there might be scoping issues that makes this impossible, but the Grails framework seems to be able to create quite some magic under the hood, so I figured it might be worth asking.

Answer 1

Using the beforeInterceptor in a controller may help:

class LoginController {      def user      def beforeInterceptor = {         user = request.user     }      def index = {          render text:'index: ${user}'             }      def test = {         render text:'test: ${user}'              } }