Symfony フレームワークでフォームタイプ (フォームタイプ) を使用する方法

namespace AppForm;

use SymfonyComponentFormAbstractType;
use SymfonyComponentFormFormBuilderInterface;
use SymfonyComponentValidatorConstraintsNotBlank;
use SymfonyComponentFormExtensionCoreTypeTextType;
use SymfonyComponentFormExtensionCoreTypeSubmitType;

class UserType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('name', TextType::class, [
                'label' => '姓名',
                'constraints' => [
                    new NotBlank([
                        'message' => '姓名不能为空',
                    ]),
                ],
            ])
            ->add('email', TextType::class, [
                'label' => '电子邮件',
                'constraints' => [
                    new NotBlank([
                        'message' => '电子邮件不能为空',
                    ]),
                ],
            ])
            ->add('submit', SubmitType::class, [
                'label' => '提交',
            ]);
    }
}

namespace AppController;

use AppFormUserType;
use SymfonyBundleFrameworkBundleControllerAbstractController;
use SymfonyComponentHttpFoundationRequest;
use SymfonyComponentRoutingAnnotationRoute;

class UserController extends AbstractController
{
    /**
     * @Route("/user", name="user")
     */
    public function index(Request $request)
    {
        $form = $this->createForm(UserType::class);

        $form->handleRequest($request);
        if ($form->isSubmitted() && $form->isValid()) {
            // 处理表单提交
            $data = $form->getData();
            // 执行其他业务逻辑

            return $this->redirectToRoute('success');
        }

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

    /**
     * @Route("/success", name="success")
     */
    public function success()
    {
        return $this->render('user/success.html.twig');
    }
}

{% extends 'base.html.twig' %}

{% block content %}
    <h1>创建用户</h1>

    {{ form_start(form) }}
        {{ form_row(form.name) }}
        {{ form_row(form.email) }}

        {{ form_widget(form.submit) }}
    {{ form_end(form) }}
{% endblock %}