- Patch #1119158 by skwashd: Added user_role_save() doesn't implement a presave hook.

modules/user/user.api.php

@@ -366,6 +366,25 @@ function hook_user_view_alter(&$build) {
   $build['#post_render'][] = 'my_module_user_post_render';
 }
 
+/**
+ * Inform other modules that a user role is about to be saved.
+ *
+ * Modules implementing this hook can act on the user role object before
+ * it has been saved to the database.
+ *
+ * @param $role
+ *   A user role object.
+ *
+ * @see hook_user_role_insert()
+ * @see hook_user_role_update()
+ */
+function hook_user_role_presave($role) {
+  // Set a UUID for the user role if it doesn't already exist
+  if (empty($role->uuid)) {
+    $role->uuid = uuid_uuid();
+  }
+}
+
 /**
  * Inform other modules that a user role has been added.
  *

modules/user/user.module

@@ -2828,6 +2828,10 @@ function user_role_save($role) {
     $query->addExpression('MAX(weight)');
     $role->weight = $query->execute()->fetchField() + 1;
   }
+
+  // Let modules modify the user role before it is saved to the database.
+  module_invoke_all('user_role_presave', $role);
+
   if (!empty($role->rid) && $role->name) {
     $status = drupal_write_record('role', $role, 'rid');
     module_invoke_all('user_role_update', $role);