public function hasJournalRole(User $user, Role $role, Journal $journal)
{
$result = false;
$journalUser = $this->getEntityManager()->getRepository('OjsJournalBundle:JournalUser')->findOneBy(['user' => $user, 'journal' => $journal]);
if (!$journalUser) {
$result = $journalUser->getRoles()->contains($role);
}
return $result;
}