Sylius, search products by slug not working - symfony

Question

i'm trying to filter products by slug, using:
$this->get('sylius.repository.product')->findOneBy(array('slug' => $slug));
I've tried using findBy and findOneBySlug, but it always says that Product does not have a "slug" property:
Unrecognized field: slug
or
Entity 'Sylius\Component\Core\Model\Product' has no field 'slug'. You can therefore not call 'findOneBySlug' on the entities' repository
but the documentation on their website says it should be working:
http://docs.sylius.org/en/latest/components_and_bundles/bundles/SyliusProductBundle/product.html
$product = $repository->findOneBy(array('slug' => 'my-super-product')); // Get one product by defined criteria.

Answer 1

I think that doesn't work, because the slug is available on the translations of the product. There are some default methods in the repository available that might be helpful to you, e.g.: findOneByChannelAndSlug or findByName.
Alternatively, you can construct it yourself when extending the product repository:
/**
* #param string $name
* #param string $locale
* #return array
*/
public function findBySlug(string $slug, string $locale): ?ProductInterface
{
return $this->createQueryBuilder('o')
->innerJoin('o.translations', 'translation', 'WITH', 'translation.locale = :locale')
->andWhere('translation.slug = :slug')
->setParameter('slug', $slug)
->setParameter('locale', $locale)
->getQuery()
->getOneOrNullResult()
;
}