$qb = $this->entityManager->createQueryBuilder()
    ->select('s, se')
    ->from('Dashboard\Entity\Section', 'se')
    ->innerJoin('se.word', 'w')
    ->innerJoin('se.location', 'l');
$qb->add('where', $qb->expr()->andx(
    $qb->expr()->eq('l.ignored', $ignored),
    $qb->expr()->eq('l.id', $params['l_id'])
), true);