Zend3 Doctrine Entity passing parameters - doctrine-orm

Question

+-----------------+ +------------------------------------+
| item table | | description table |
+----+------+-----+ +----+---------+------+--------------+
| id | name | ... | | id | item_id | lang | text |
+----+------+-----+ +----+---------+------+--------------+
| 1 | 1st | ... | | 1 | 1 | en | english text |
+----+------+-----+ +----+---------+------+--------------+
| 2 | 2nd | ... | | 2 | 1 | de | deutsch text |
+----+------+-----+ +----+---------+------+--------------+
| 3 | 2 | en | english text |
+----+---------+------+--------------+
class Item {
...
/**
* #ORM\OneToMany(targetEntity="\Application\Entity\Desc", mappedBy="item")
*/
protected $description;
...
}
class Desc {
...
/**
* #ORM\ManyToOne(targetEntity="\Application\Entity\Item", inversedBy="description")
* #ORM\JoinColumn(name="item_id", referencedColumnName="id")
*/
protected $item;
/**
* #ORM\Column(name="text")
protected $text;
public function getDesc(/*passing lang*/)
{
//there returned array of values, not single result
return $this->text;
}
...
}
I have two table with OneToMany relatives. I set #ORM comment tag in entities and succesfully get descriptions array in item entity (EN and De lang). How I can to get only one lang description by passing lang argument to description entity without array iteration and excess SQL row in DB query?

Answer 1

In the Item Class, you can do something like this, which will return only the description with the specified language parameter:
/**
*
* #return \Application\Entity\Desc
*/
public function getDescByLanguage($language)
{
$criteria = Criteria::create()
->where(Criteria::expr()->eq("lang", $language))
->setFirstResult(0)
->setMaxResults(1);
$descByLanguage = $this->description->matching($criteria);
return $descByLanguage[0];
}