--- /dev/null
+<?php
+
+namespace Drupal\user\Plugin\views\argument;
+
+use Drupal\Core\Entity\EntityManagerInterface;
+use Drupal\views\Plugin\views\argument\ManyToOne;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Allow role ID(s) as argument.
+ *
+ * @ingroup views_argument_handlers
+ *
+ * @ViewsArgument("user__roles_rid")
+ */
+class RolesRid extends ManyToOne {
+
+ /**
+ * The role entity storage
+ *
+ * @var \Drupal\user\RoleStorage
+ */
+ protected $roleStorage;
+
+ /**
+ * Constructs a \Drupal\user\Plugin\views\argument\RolesRid object.
+ *
+ * @param array $configuration
+ * A configuration array containing information about the plugin instance.
+ * @param string $plugin_id
+ * The plugin_id for the plugin instance.
+ * @param mixed $plugin_definition
+ * The plugin implementation definition.
+ * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
+ * The entity manager.
+ */
+ public function __construct(array $configuration, $plugin_id, $plugin_definition, EntityManagerInterface $entity_manager) {
+ parent::__construct($configuration, $plugin_id, $plugin_definition);
+
+ $this->roleStorage = $entity_manager->getStorage('user_role');
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+ return new static($configuration, $plugin_id, $plugin_definition, $container->get('entity.manager'));
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function titleQuery() {
+ $entities = $this->roleStorage->loadMultiple($this->value);
+ $titles = [];
+ foreach ($entities as $entity) {
+ $titles[] = $entity->label();
+ }
+ return $titles;
+ }
+
+}