SYMFONY 4-如何将用户重定向到相同表单的下一部分？(在另一页上)

// src/Form/MyFormType.php
namespace App\Form;

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

class MyFormType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('field1', TextType::class)
            ->add('field2', TextType::class)
            // 添加其他表单字段
            ;
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            // 设置表单数据类
            'data_class' => MyFormData::class,
        ]);
    }
}

// src/Entity/MyFormData.php
namespace App\Entity;

class MyFormData
{
    private $field1;
    private $field2;
    // 添加其他表单字段的私有属性

    // 添加getter和setter方法
}

// src/Controller/MyFormController.php
namespace App\Controller;

use App\Entity\MyFormData;
use App\Form\MyFormType;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Routing\Annotation\Route;

class MyFormController extends AbstractController
{
    /**
     * @Route("/form", name="form")
     */
    public function form(Request $request)
    {
        // 创建表单实例
        $formData = new MyFormData();
        $form = $this->createForm(MyFormType::class, $formData);

        // 处理表单提交
        $form->handleRequest($request);
        if ($form->isSubmitted() && $form->isValid()) {
            // 处理表单数据

            // 重定向到下一部分表单
            return $this->redirectToRoute('next_form');
        }

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

    /**
     * @Route("/form/next", name="next_form")
     */
    public function nextForm(Request $request)
    {
        // 创建表单实例
        $formData = new MyFormData();
        $form = $this->createForm(MyFormType::class, $formData);

        // 处理表单提交
        $form->handleRequest($request);
        if ($form->isSubmitted() && $form->isValid()) {
            // 处理表单数据

            // 重定向到其他页面或完成表单流程
            return $this->redirectToRoute('success_page');
        }

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

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

# config/routes.yaml
form:
    path: /form
    controller: App\Controller\MyFormController::form

next_form:
    path: /form/next
    controller: App\Controller\MyFormController::nextForm

success_page:
    path: /success
    controller: App\Controller\MyFormController::successPage

{# templates/form.html.twig #}
<form method="post">
    {{ form_widget(form.field1) }}
    {{ form_widget(form.field2) }}
    {# 添加其他表单字段的widget #}

    <button type="submit">下一步</button>
</form>

{# templates/next_form.html.twig #}
<form method="post">
    {{ form_widget(form.field1) }}
    {{ form_widget(form.field2) }}
    {# 添加其他表单字段的widget #}

    <button type="submit">提交</button>
</form>

{# templates/success.html.twig #}
<h1>表单提交成功！</h1>