Doctrine EntityRepository, query a ManyToMany relation by an array - doctrine-orm

Question

I have an entity, Offer, with a ManyToMany relationship to a Country Entity (i.e. an offer can be available on many countries)
Class Offer
{
[...]
/**
* #ORM\ManyToMany(targetEntity="Country")
* #ORM\JoinTable(
* name="offer_cc",
* joinColumns={
* #ORM\JoinColumn(name="offer_id", referencedColumnName="id")
* },
* inverseJoinColumns={
* #ORM\JoinColumn(name="cc", referencedColumnName="cc")
* }
* )
*/
private $countries;
}
And I want to query for all offers which have a country of a given array.
An image to better understand:
In this case, It should show only Offer 1 and Offer 2 because the former has Andorra and the latter has Italy.
From the form I have an ArrayCollection of Country entities.
Is it possible to do this in a EntityRepository with a query builder?
For example, this is how I filter by payoutMode, which is a simple int value:
class OfferRepository extends EntityRepository
{
public function findAllFiltered(array $filter = [])
{
$qb = $this->createQueryBuilder('offer');
// Show only active offers
$qb->where('offer.status=1');
if($filter['payoutMode'] ?? null) {
$qb->andWhere("offer.payoutMode = :payoutMode")->setParameter(':payoutMode', $filter['payoutMode']);
}
// TODO add filter by cc, category, tags
return $qb->getQuery()->execute();
}
}
Here, $filter['countries'] contains:
ArrayCollection {#748 ▼
-elements: array:2 [▼
0 => Country {#762 ▼
-cc: "AD"
}
1 => Country {#769 ▼
-cc: "IT"
}
]
}

Answer 1

In DQL you there is IN function which can takes as right-side argument an array of IDs or array of entities. Use it for JOIN condition
Since you already get ArrayList of Country entities, it could be something like this:
class OfferRepository extends EntityRepository
{
public function findAllFiltered(array $filter = [])
{
$qb = $this->createQueryBuilder('offer');
// Show only active offers
$qb->where('offer.status=1');
if($filter['payoutMode'] ?? null) {
$qb->join("offer.payoutMode = :payoutMode")->setParameter(':payoutMode', $filter['countries']);
}
if(!empty($filter['payoutMode'])) {
$qb->join('offer.countries', 'c', Expr\Join::WITH, 'c IN :countries')
->setParameter(':countries', $filter['countries']);
}
// TODO add filter by cc, category, tags
return $qb->getQuery()->execute();
}
}
Code not tested, so I could mess something up with the DQL JOIN syntax.
I'm not sure if 'c IN :countries' syntax in valid in this context.
But in general, this is the way.

Answer 2

I think I found the solution:
if(count($filter['countries'] ?? [])) {
$qb->leftJoin('offer.countries', 'countries')
->andWhere("countries IN (:ccs)")->setParameter(':ccs', $filter['countries']);
}