public function deleteField($p_articleType, $p_fieldNames)
{
$qb = $this->createQueryBuilder('dt')->delete()->andWhere('dt.articleType = :articleType')->setParameter('articleType', $p_articleType)->andWhere('dt.fieldName = :fieldNameOld')->setParameter('fieldNameOld', $p_fieldNames['old']);
$q = $qb->getQuery();
$q->execute();
}