pass a flash message along with a gsp g:link

Question

In a grails3 create view, I'd like to have the Cancel button which just points back to the index page. On the index page, I'd like to display a message informing about the cancellation.

<g:link controller="${controllerName}" action="index" class="btn btn-default" params="[flash.message: 'Create cancelled']">
    Cancel
</g:link>

The above button is just a non-working mockup, no message is popping up. What would be the best way to achieve a flash.message popping up on the next page?

Answer 1

You could just redirect from a cancel action say:

gsp

<g:link controller="${controllerName}" action="cancel" class="btn btn-default">
    Cancel
</g:link>

Controller

def cancel(){
    flash.message = message( code: 'cancel.message.in.messages.properties' )
    redirect(action: 'index')
}