错误：在非对象[重复]上调用成员函数getId（）

Question

This question already has an answer here:

• Symfony2: Call to a member function getId() on a non-object even though there is an object? 1 answer

I am trying to get the id from a entity object.

The Code

public function findByName($name)
{
    $qb = $this->createQueryBuilder('u');
    $qb->where('u.name  = :name');
    $qp->setParameter('name', $name);
    return $qb->getQuery()->getResult();
}

And I am calling the function like this

$Obj = $this->getDoctrine()->getRepository('UserBundle:User');
$idName=$Obj->findByName('Sarah');
var_dump($idName->getId());

I am getting an error for this part var_dump($idName->getId());.

I am getting the whole Object and I just want the Id. It doesn't work.

$idName dumps to this:

@array(1) {<br>
[0]=> object(UserBundle\Entity\User)#2339 (2) { <br>
["id":"UserBundle\Entity\User":private]=> int(2) ["name":"UserBundle\Entity\User":private]=> string(8) "Sarah" <br>
} }

</div>

Answer 1

findBy... always returns an array of found entities (even if there is just one found for the criteria). Use findOneBy... to always get only the first entity returned.