Doctrine 2 - ManyToMany + IN clause - php

Question

I've got this model:
/** #Entity #Table(name="articles") */
class Article {
/** #Id #GeneratedValue #Column(type="integer") */
protected $id;
/** #Column(type="string", length=100, nullable=true) */
protected $title;
/** #ManyToOne(targetEntity="User", inversedBy="articles") */
protected $author;
/** #Column(type="datetime") */
protected $datetime;
/**
* #ManyToMany(targetEntity="Game", inversedBy="articles")
* #JoinTable(name="articles_games",
* joinColumns={#JoinColumn(name="article_id", referencedColumnName="id")},
* inverseJoinColumns={#JoinColumn(name="game_id", referencedColumnName="id")}
* )
*/
protected $games;
# Constructor
public function __construct() {
$this->datetime = new DateTime();
$this->games = new \Doctrine\Common\Collections\ArrayCollection();
}
# ID
public function getId() { return $this->id; }
# TITLE
public function setTitle($v) { $this->title = $v; }
public function getTitle() {
if(empty($this->title)) {
$game = $this->getFirstGame();
return ($game instanceof Game) ? $game->getTitle() : NULL;
} else
return $this->title;
}
# AUTHOR
public function setAuthor($v) { $this->author = $v; }
public function getAuthor() { return $this->author; }
# DATE & TIME
public function getDateTime() { return $this->datetime; }
public function setDateTime($v) { $this->datetime = $v; }
# GAMES
public function setGames($value) {
$except_txt = 'Jedna z przesłanych wartości nie jest instancją klasy Game!';
if(is_array($value)) {
foreach($value as $v) {
if($v instanceof Game) $this->games->add($v);
else throw new Exception($except_txt);
}
} else {
if($value instanceof Game) $this->games->add($value);
else throw new Exception($except_txt);
}
}
public function getGames() { return $this->games; }
}
How to make query looking like this
SELECT a FROM Article a WHERE :game_id IN a.games
I have this (the $game->getId() is an integer)
$articles = $db->createQuery("SELECT a.type FROM Article a WHERE :game_id IN a.games GROUP BY a.type")->setParameter('game_id', $game->getId())->getResult();
But it's returning me an syntax error
[Syntax Error] line 0, col 47: Error: Expected Doctrine\ORM\Query\Lexer::T_OPEN_PARENTHESIS, got 'a'

Answer 1

This question was linked from a more recent question that I just answered, and I feel it would also be beneficial to put it here as it is a much more correct solution:
The Doctrine IN function expects a format of (1, 2, 3, 4, ...) after the IN statement. Unfortunately, it is not meant for column conditionals to prove membership.
However, I believe you're looking for the MEMBER OF Doctrine function:
SELECT a FROM Article a WHERE :game_id MEMBER OF a.games
You can pass a valid Doctrine object or the identifier into game_id using this functionality.
The example for this is hidden deep in the Doctrine docs:
$query = $em->createQuery('SELECT u.id FROM CmsUser u WHERE :groupId MEMBER OF u.groups');
$query->setParameter('groupId', $group);
$ids = $query->getResult();

Answer 2

If you are looking for articles related to one game:
$articles = $db->createQuery("SELECT a FROM Article a JOIN a.games game WHERE game.id = :game_id")
->setParameter('game_id', $game->getId())
->getResult();
or multiple:
$articles = $db->createQuery("SELECT a FROM Article a JOIN a.games game WHERE game.id IN (?,?, ... ?)")
->setParameters(array($game1->getId(), $game2->getId() ... $gameN->getId()))
->getResult();

Answer 3

I guess you need to create a custom repository for that. I have just solved such problem.
use Doctrine\ORM\EntityRepository;
class Company extends EntityRepository
{
/**
* Load by product.
* #param int $productId
* #return array
*/
public function getByProduct($productId)
{
$dql = "SELECT i FROM Domain\Model\Company i JOIN i.products p WHERE p.id = :id";
return $this->_em->createQuery($dql)->setParameter(':id', $productId)->getResult();
}
}