Symfony 3-获取表单中EntityType选项的本机查询

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\EntityType;
use Symfony\Component\Form\FormBuilderInterface;

class YourFormType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('yourEntityField', EntityType::class, [
                'class' => YourEntity::class,
                'query_builder' => function (YourEntityRepository $repository) {
                    return $repository->createQueryBuilder('e')
                        ->orderBy('e.name', 'ASC');
                },
                'choice_label' => 'name',
            ]);
    }
}

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Routing\Annotation\Route;

class YourController extends AbstractController
{
    /**
     * @Route("/your-route", name="your_route")
     */
    public function yourAction(Request $request)
    {
        $form = $this->createForm(YourFormType::class);

        // 处理表单提交
        $form->handleRequest($request);
        if ($form->isSubmitted() && $form->isValid()) {
            // 执行相应的操作
        }

        return $this->render('your_template.html.twig', [
            'form' => $form->createView(),
        ]);
    }
}