如何删除symfony表单类型输入字段中的空格？

// src/Form/DataTransformer/TrimTransformer.php

namespace App\Form\DataTransformer;

use Symfony\Component\Form\DataTransformerInterface;

class TrimTransformer implements DataTransformerInterface
{
    public function transform($value)
    {
        // 在输出时不进行任何转换
        return $value;
    }

    public function reverseTransform($value)
    {
        // 删除输入值中的空格
        if (is_string($value)) {
            $value = trim($value);
        }

        return $value;
    }
}

// src/Form/YourFormType.php

namespace App\Form;

use App\Form\DataTransformer\TrimTransformer;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;

class YourFormType extends AbstractType
{
    private $trimTransformer;

    public function __construct(TrimTransformer $trimTransformer)
    {
        $this->trimTransformer = $trimTransformer;
    }

    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('yourField', TextType::class)
        ;

        // 将数据转换器应用于字段
        $builder->get('yourField')->addModelTransformer($this->trimTransformer);
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            // ...
        ]);
    }
}

// src/Controller/YourController.php

namespace App\Controller;

use App\Form\YourFormType;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;

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

        $form->handleRequest($request);
        if ($form->isSubmitted() && $form->isValid()) {
            // 处理表单提交的数据
            $data = $form->getData();
            // ...
        }

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