redirect in Grails controller

Question

I'm new to Grails , i'm using Grails version 2.3.4 , in my application i have 2 controllers

AppUser

and

ManageLicences

, in the AppUsers there is a method named auth and below its code :

def auth()
{
    if (!params.username.empty)
    {
  redirect  (controller: "manageLicences" , action:"checkLicense")
     }
}

In the checkLicense in the ManageLicense controller i'm doing some redirects depending on some conditions

def checkLicense {
if (someCondition) {
    redirect (controller:'manageLicences' , action:'list')
        }
    else {
        redirect  (controller:'appUsers' , action:'login' )

        }
}

, the problem is that when my application reaches

 redirect  (controller: "manageLicences" , action:"checkLicense")

in the AppUsers controller , rather going to the redirect that in checkLicense , the URL in the browser will be

http://localhost:8080/MyApplication/manageLicences/checkLicense

and blank page , any advice ?

Make sure you have a `return` statement after each `redirect` call. — sebnukem, Dec 23 '14 at 18:22
Add some logging in,before, and after the 'if' to see what's happening. — Lifeweaver, Dec 23 '14 at 20:54
do you know if you are making it to 'checkLicense' before the condition statement? Did you add return statements after all redirects? Looks like in the end either 'list' in ManageLicencesController or 'login' in AppUsersController will be called. Do you have actions and views defined for both? — Mike Croteau, Jan 17 '15 at 09:48

score 4 · Answer 1 · edited Jun 20 '20 at 09:12

Check that you're not doing redirect from a namespaced controller to a controller that is not in a namespace.

According to Grails Documentation:

Redirects the current action to another action, optionally passing parameters and/or errors. When issuing a redirect from a namespaced controller, the namespace for the target controller is implied to be that of the controller initiating the redirect. To issue a redirect from a namespaced controller to a controller that is not in a namespace, the namespace must be explicitly specified with a value of null as shown below.

class SomeController {
    static namespace = 'someNamespace'
    def index() {
        // issue a redirect to PersonController which does not define a namespace
        redirect action: 'list', controller: 'person', namespace: null
    }
}

score 0 · Answer 2 · answered Sep 15 '18 at 08:17

0

def checkLicense {
    if (someCondition) {
        redirect (controller:'manageLicences' , action:'list')
        return
    } else {
        redirect  (controller:'appUsers' , action:'login' )
        return
    }
}

answered Sep 15 '18 at 08:17

Gnt.Lee

11
2

redirect in Grails controller

2 Answers2