Merge pull request #389 from localgovdrupal/fix/1.x-388-emergency-pub…

…lisher-role

Check if emergency publisher role exits before changing permissions

localgov_alert_banner.install

@@ -11,6 +11,7 @@ use Drupal\Core\Config\FileStorage;
 use Drupal\Core\Field\BaseFieldDefinition;
 use Drupal\field\Entity\FieldConfig;
 use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\user\Entity\Role;
 use Drupal\user\RoleInterface;
 use Symfony\Component\Yaml\Yaml;
 
@@ -231,13 +232,18 @@ function localgov_alert_banner_update_9002() {
  */
 function localgov_alert_banner_update_10002() {
   $module_handler = \Drupal::service('module_handler');
+
   $perms[] = 'view the administration theme';
   if ($module_handler->moduleExists('node')) {
     $perms[] = 'access content overview';
   }
   if ($module_handler->moduleExists('toolbar')) {
     $perms[] = 'access toolbar';
   }
-  user_role_grant_permissions('emergency_publisher', $perms);
-  user_role_revoke_permissions('emergency_publisher', ['access administration pages']);
+
+  // Add and revoke permissions if emergency publisher exists.
+  if (Role::load('emergency_publisher') instanceof RoleInterface) {
+    user_role_grant_permissions('emergency_publisher', $perms);
+    user_role_revoke_permissions('emergency_publisher', ['access administration pages']);
+  }
 }