/**
* Search for existing translation record or
* it`s field translation only
*
* @param EntityManager $em
* @param mixed $entityId
* @param string $entityClass
* @param string $locale
* @param string $field
* @throws Translatable\Exception if unit of work has pending inserts
* to avoid infinite loop
* @return mixed - null if nothing is found, Translation otherwise
*/
protected function _findTranslation(EntityManager $em, $entityId, $entityClass, $locale, $field)
{
if ($em->getUnitOfWork()->hasPendingInsertions()) {
throw Exception::pendingInserts();
}
$qb = $em->createQueryBuilder();
$qb->select('trans')->from($this->getTranslationClass($entityClass), 'trans')->where('trans.foreignKey = :entityId', 'trans.locale = :locale', 'trans.field = :field', 'trans.entity = :entityClass');
$q = $qb->getQuery();
$result = $q->execute(compact('field', 'locale', 'entityId', 'entityClass'), Query::HYDRATE_OBJECT);
if ($result) {
return array_shift($result);
}
return null;
}
