ISTWCMS-3921: adding status message to content form

src/Form/UwContentAccessForm.php

@@ -13,6 +13,7 @@ use Drupal\Core\Form\FormStateInterface;
 use Drupal\user\PermissionHandlerInterface;
 use Drupal\user\RoleStorageInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\Core\Messenger\MessengerTrait;
 
 class UwContentAccessForm extends FormBase {
 
@@ -195,6 +196,8 @@ class UwContentAccessForm extends FormBase {
       // Save the role object.
       $uw_role_object->save();
     }
+
+    $this->messenger()->addStatus($this->t('The changes have been saved.'));
   }
 
   /**