doctirne操作

  public function getChampionQuizzes($gameCategoryId)
  {
    $dql = "SELECT q
            FROM TronWebBundle:Quiz q
            LEFT JOIN q.league l
            WHERE q.league is not null AND l.gameCategory = :gameCategory";

    $quiz = $this->getEntityManager()
                ->createQuery($dql)
                ->setParameter(‘gameCategory‘, $gameCategoryId)
                ->getResult();

    return $quiz;
  }