/**
* вернуть деньги с баланса кампании на счёт юзера
*
* @param Campaign $campaign
*/
public function transferMoneyBackToUser(Campaign $campaign)
{
$this->em->transactional(function (EntityManager $em) use($campaign) {
$em->getRepository('VifeedUserBundle:User')->updateBalance($campaign->getUser(), $campaign->getBalance());
$campaign->setBalance(0);
$em->persist($campaign);
});
}