/**
* @param Publication $object
* @return mixed|void
*/
public function preUpdate($object)
{
if (is_null($object->getCreatedAt())) {
$object->setCreatedAt(new \DateTime());
}
}
/**
* Returns next or previous publications
*
* @param Publication $current
* @param int $limit
* @param string $comparison
* @param null $criteria
* @return \PropelObjectCollection|Publication|null
*/
protected function getSiblings(Publication $current, $limit, $comparison, $criteria = null)
{
return PublicationQuery::create(null, $criteria)->applyBaseFilter($current->getPublicationTypeKey())->filterByCreatedAt($current->getCreatedAt(), $comparison)->applySorting($comparison == \Criteria::GREATER_THAN ? \Criteria::ASC : \Criteria::DESC)->findWithLimit($limit);
}