public function findById($id)
{
try {
$queryBuilder = $this->createQueryBuilder('condition')->andWhere('condition.id = :conditionId')->addSelect('conditionGroup')->leftJoin('condition.conditionGroup', 'conditionGroup')->setParameter('conditionId', $id);
return $queryBuilder->getQuery()->getSingleResult();
} catch (NoResultException $exc) {
return;
}
}