remove roles from users when role is deleted (#1640)

src/Repository/UserRepository.php

@@ -9,6 +9,7 @@
 
 namespace App\Repository;
 
+use App\Entity\Role;
 use App\Entity\User;
 use App\Repository\Loader\UserLoader;
 use App\Repository\Paginator\LoaderPaginator;
@@ -170,6 +171,28 @@ class UserRepository extends EntityRepository implements UserLoaderInterface
         }
     }
 
+    /**
+     * @param string $role
+     * @return User[]
+     * @internal
+     */
+    public function findUsersWithRole(string $role): array
+    {
+        if ($role === User::ROLE_USER) {
+            return $this->findAll();
+        }
+
+        $qb = $this->getEntityManager()->createQueryBuilder();
+
+        $qb
+            ->select('u')
+            ->from(User::class, 'u')
+            ->andWhere('u.roles LIKE :role');
+        $qb->setParameter('role', '%' . $role . '%');
+
+        return $qb->getQuery()->getResult();
+    }
+
     private function getQueryBuilderForQuery(UserQuery $query): QueryBuilder
     {
         $qb = $this->getEntityManager()->createQueryBuilder();