如何在Symfony4中将参数传递给自定义原则类型

// src/Form/Type/CustomRuleType.php

namespace App\Form\Type;

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

class CustomRuleType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('parameter', TextType::class, [
                'label' => 'Parameter',
                'required' => true,
            ]);
    }
}

// src/Controller/YourController.php

namespace App\Controller;

use App\Form\Type\CustomRuleType;
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(CustomRuleType::class);
        
        // 处理表单提交
        $form->handleRequest($request);
        
        if ($form->isSubmitted() && $form->isValid()) {
            // 获取传递的参数
            $parameter = $form->get('parameter')->getData();
            
            // 在这里可以对参数进行处理或使用
            
            // ...
        }
        
        return $this->render('your_template.html.twig', [
            'form' => $form->createView(),
        ]);
    }
}

{# templates/your_template.html.twig #}

<form method="post" action="{{ path('your_route') }}">
    {{ form_widget(form) }}
    <button type="submit">Submit</button>
</form>