Doctrine: QueryBuilder Where Exists - php

Question

Answer
I was able to do the query using IS NOT EMPTY in the where clause.
/**
* Finds all developments having at least one image.
*
* #param string
* #return array
*/
public function withImages()
{
return $this->query->createQueryBuilder('d')
->where('d.images IS NOT EMPTY')
->getQuery()
->getResult();
}
Question
I am using the Doctrine ORM. I would like to be able to get all developments which have at least one image, such that for every Development selected in the query, the following property would be true. $development->getImages()->count()) > 0.
I have a Development entity which has a One to Many relationship with an Image entity.
/**
* The Development class provides an abstraction of a development.
*
* #Entity
* #HasLifecycleCallbacks
* #Table(name="developments")
**/
class Development extends BaseEntitiy {
/** #OneToMany(targetEntity="Exquisite\Entity\Image", mappedBy="development") **/
protected $images;
I have a DevelopmentRepository which has an instance of a EntityManager and an instance of the Repository for the Entity. I have made an attempt to do this in my withImages() method in the DevelopmentRepository class, but not having much luck.
class DevelopmentRepository implements DevelopmentRepositoryInterface {
/**
* Class Constructor
*
* #param Doctinre\ORM\EntityManager The EntityManager instance.
*/
public function __construct(EntityManager $em)
{
$this->em = $em;
$this->query = $this->em->getRepository('Exquisite\Entity\Development');
}
/**
* Finds all developments having at least one image.
*
* #param string
* #return array
*/
public function withImages()
{
$qb = $this->query->createQueryBuilder('d');
$qb2 = $this->em->createQueryBuilder();
return $qb->where($qb->expr()->exists($qb2->select('i.development')->from('Exquisite\Entity\Image', 'i')->getDql()))
->getQuery()
->getResult();
}
Any help would be much appreciated!

Answer 1

I had the same problem, and this worked for me.
I fixed just doing a join (would return only the orders with items):
return $this->createQueryBuilder('so')
->select('so')
->join('so.orderItems', 'soi')
->getQuery()
->getResult();
Or doing a sub query with DQL
SELECT so
FROM Entity\\SalesOrder so
WHERE (SELECT count(soi.id) FROM Entity\\SalesOrderItem soi WHERE soi.salesOrder = so.id ) > 0
I hope this can be helpful