Symfony query => Error: Expected Literal, got '"'

Question

I have the following query: (it works fine without the addSelect('CASE ... END AS HIDDEN loquer') part which goals is to add some order into my comments. but with this part the following message from symfony is triggered: Error: Expected Literal, got '"'

public function myfindArticleandCommentsandScores($article,$language){
    $qb = $this->createQueryBuilder('a');
    $qb->leftjoin('a.comments','c')
        ->addSelect('c')
        ->leftJoin('c.scores','s')
        ->addSelect('s')
        ->leftJoin('s.user','u')
        ->addSelect('u')
        ->addSelect('
                CASE 
                    WHEN c.show = "yes" THEN 1  // PROBLEME IS HERE
                    ELSE 2
                END AS HIDDEN show_order  
            ')
        ->where(
                    $qb->expr()->eq('a.id', '?1'),
                    $qb->expr()->orX(
                        $qb->expr()->eq('c.langue', '?2'),
                        $qb->expr()->eq('c.langue', '?3')
                        )
                )
        ->setParameters(array(
                    '1'=> $article,
                    '2'=> $language,
                    '3'=> 'EN',
                ))
        ->orderBy('show_order', 'ASC')
        ->addOrderBy('c.scorenote', 'DESC');

    return $qb->getQuery()
                ->getResult();
}

I tried to replace "yes" with 'yes' but then I got the following message: FatalErrorException: Parse: syntax error, unexpected 'oui' (T_STRING)

Answer 1

Use setParameter to replace a placeholder with a string or use "xyz='yes'"

Now what the code should looks like (one possible way):

public function myfindArticleandCommentsandScores($article,$language){
    $qb = $this->createQueryBuilder('a');
    $qb->leftjoin('a.comments','c')
        ->addSelect('c')
        ->leftJoin('c.scores','s')
        ->addSelect('s')
        ->leftJoin('s.user','u')
        ->addSelect('u')
        ->addSelect('
                CASE 
                    WHEN c.show = \'yes\' THEN 1  // PROBLEME IS HERE
                    ELSE 2
                END AS HIDDEN show_order  
            ')
        ->where(
                    $qb->expr()->eq('a.id', '?1'),
                    $qb->expr()->orX(
                        $qb->expr()->eq('c.langue', '?2'),
                        $qb->expr()->eq('c.langue', '?3')
                        )
                )
        ->setParameters(array(
                    '1'=> $article,
                    '2'=> $language,
                    '3'=> 'EN',
                ))
        ->orderBy('show_order', 'ASC')
        ->addOrderBy('c.scorenote', 'DESC');

    return $qb->getQuery()
                ->getResult();
}

Answer 2

I added a parameter just like this:

->addSelect('
    CASE 
           WHEN t.loquage = :show_first THEN 1
           ELSE 2
    END AS HIDDEN loquer  
            ')
->setParameters(array(
        'show_first'=> 'oui', 

thanks to Qoop who helped me.

Answer 3

String delimiters in DQL should be avoided where possible.

->addSelect('
    CASE 
        WHEN c.show = :show THEN 1
        ELSE 2
    END AS HIDDEN show_order  
')
->setParameter('show', 'yes')