The method name must start with either findBy, findOneBy, countBy - symfony

Question

I've got a command tryng to access a repository method. But I can't succeed.
services.yml
app.command.app_checkOfferDemand:
class: AppRefactoredBundle\Command\CheckOfferAndDemand
arguments: ['#doctrine.orm.entity_manager']
tags:
- { name: console.command }
app_OfferRepository
class app_OfferRepository extends \Doctrine\ORM\EntityRepository
{
private function checkAndUpdate(){
$em = $this->getContainer()->get('doctrine')->getManager();
$qb = $em->createQueryBuilder();
$q = $qb->update('app_Offer', 'o')
->set('o.status_id', 2)
->where('o.createdAt < DATE_SUB(NOW(), INTERVAL 2 HOUR)')
->getQuery();
return $q->execute();
}
}
CheckOfferAndDemand
class CheckOfferAndDemand extends Command{
private $em;
public function __construct(EntityManager $em)
{
parent::__construct();
$this->em=$em;
}
protected function configure()
{
// On set le nom de la commande
$this->setName('app:check_OfferDemand');
// On set la description
$this->setDescription("Permet de controler le timeout des offres et demandes");
// On set l'aide
$this->setHelp("Cette commande ne prend pas d'argument et travailler sur toutes les offres et demandes");
}
public function execute(InputInterface $input, OutputInterface $output){
$output->writeln("update des offres");
$this->em->getRepository('AppRefactoredBundle:app_Offer')->checkAndUpdate();
$output->writeln("update des demandes");
$this->em->getRepository('AppRefactoredBundle:app_Demand')->checkAndUpdate();
$this->em->flush();
$output->writeln("DONE");
}
}
The command by itself is working (the first update print is made).
But then the error is triggered
Undefined method 'checkAndUpdate'. The method name must start with either findBy, findOneBy or countBy!
The entities seems to be well declared too
/**
* app_Offer
*
* #ORM\Table(name="app__offer")
* #ORM\Entity(repositoryClass="AppRefactoredBundle\Repository\app_OfferRepository")
*/
class app_Offer
Thanks for your help.

Answer 1

Your Repository method cannot be accessed because it's denoted as private.
Change
private function checkAndUpdate() {
to
public function checkAndUpdate() {