Symfony2对象

Question

I am having problem in getting data from doctrine object. When I use findOne(id) and try to access any variable like $result->getVariable() it works fine. But as soon as I use doctrine query builder and add some conditions, it says

Attempted to call method "getVariable" on class "Doctrine\ORM\QueryBuilder....

My Code is

foreach ($Ids as $Id) {
            $result = $em->createQueryBuilder()->select("s")
                ->from("Entity", "s")
                ->where('s.id = :s_id')
                ->setParameters(array('s_id'=>$Id));
     if($category)
     {

        $result->innerJoin('s.cat','c');
        $result->where("c.primaryClassification =   :category");
        result->setParameter('category',$category);
    }

}

The Code which is working is

foreach ($Ids as $Id) {
$em->getRepository("Entity")->findOneById($Id);
}

I think it is the difference in data returned because of different types of methods used.

Thanks in advance!

Answer 1

That's because the QueryBuilder is only for that, to build querys (BA-DUM-TSS). What you need is to execute the query after you build it and set the parameter correctly for a = :

foreach ($Ids as $Id) {
    $query[] = $em->createQueryBuilder()->select("s")
        ->from("Entity", "s")
        ->where('s.id = :s_id')
        ->setParameter('s_id', $Id))
        ->getQuery()
        ->getResult();
}

also if you are looking for an array of data, is BEST if you use the IN statement without the foreach and pass the array directly to the setParameter :

$result = $em->createQueryBuilder()->select("s")
    ->from("Entity", "s")
    ->where('s.id IN (:s_id)')
    ->setParameter('s_id', $Ids)
    ->getQuery
    ->getResult();

If you need more info on the query builder check the docs .