Symfony formtype从另一个实体添加查询生成器

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Doctrine\ORM\EntityRepository;

class MyFormType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('entityField', EntityType::class, [
            'class' => 'AppBundle:Entity',
            'query_builder' => function (EntityRepository $er) {
                return $er->createQueryBuilder('e')
                    ->where('e.someProperty = :value')
                    ->setParameter('value', 'someValue');
            },
        ]);
    }
}