User roles and permission management via Admin UI (#1231)

src/Repository/RoleRepository.php

@@ -0,0 +1,47 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Repository;
+
+use App\Entity\Role;
+use Doctrine\ORM\EntityRepository;
+use Doctrine\ORM\ORMException;
+
+class RoleRepository extends EntityRepository
+{
+    /**
+     * @return Role[]
+     */
+    public function findAll()
+    {
+        return parent::findAll();
+    }
+
+    public function saveRole(Role $role)
+    {
+        $entityManager = $this->getEntityManager();
+        $entityManager->persist($role);
+        $entityManager->flush();
+    }
+
+    public function deleteRole(Role $role)
+    {
+        $em = $this->getEntityManager();
+        $em->beginTransaction();
+
+        try {
+            $em->remove($role);
+            $em->flush();
+            $em->commit();
+        } catch (ORMException $ex) {
+            $em->rollback();
+            throw $ex;
+        }
+    }
+}