在没有数据库的情况下创建 Symfony 4 表单

Question

我是 symfony 的新手，想创建一个简单的联系表单，获取提交的值并将它们作为电子邮件发送。我不想在数据库中保存任何内容。

我遵循了此页面上的文档：https://symfony.com/doc/current/form/without_class.html

我使用上面页面中的代码创建了一个新的 page/action：

    /**
     * @Route("/contact", name="page_contact")
     */
    public function contact(Request $request)
    {
        $defaultData = ['message' => 'Type your message here'];
        $form = $this->createFormBuilder($defaultData)
            ->add('name', TextType::class)
            ->add('email', EmailType::class)
            ->add('message', TextareaType::class)
            ->add('send', SubmitType::class)
            ->getForm();

        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            // data is an array with "name", "email", and "message" keys
            $data = $form->getData();
        }

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

但这给了我一个错误：

Symfony\Component\Form\Exception\InvalidArgumentException:
Could not load type "Doctrine\DBAL\Types\TextType": class does not implement "Symfony\Component\Form\FormTypeInterface".

  at vendor/symfony/form/FormRegistry.php:89
  at Symfony\Component\Form\FormRegistry->getType('Doctrine\DBAL\Types\TextType')
     (vendor/symfony/form/FormFactory.php:74)
  at Symfony\Component\Form\FormFactory->createNamedBuilder('name', 'Doctrine\DBAL\Types\TextType', null, array())
     (vendor/symfony/form/FormBuilder.php:97)
  at Symfony\Component\Form\FormBuilder->create('name', 'Doctrine\DBAL\Types\TextType', array())
     (vendor/symfony/form/FormBuilder.php:256)
  at Symfony\Component\Form\FormBuilder->resolveChildren()
     (vendor/symfony/form/FormBuilder.php:206)
  at Symfony\Component\Form\FormBuilder->getForm()
     (src/Controller/ShopController.php:68)
  at App\Controller\ShopController->contact(object(Request))
     (vendor/symfony/http-kernel/HttpKernel.php:149)
  at Symfony\Component\HttpKernel\HttpKernel->handleRaw(object(Request), 1)
     (vendor/symfony/http-kernel/HttpKernel.php:66)
  at Symfony\Component\HttpKernel\HttpKernel->handle(object(Request), 1, true)
     (vendor/symfony/http-kernel/Kernel.php:190)
  at Symfony\Component\HttpKernel\Kernel->handle(object(Request))
     (public/index.php:37)

我做错了什么？为什么堆栈跟踪中有所有 Doctrine 内容？

Answer 1

您可能导入了错误的类型。而不是：

use Doctrine\DBAL\Types\TextType;

你需要：

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

Answer 2

'form' => $form->createView() 而不是 'form' => $form

在没有数据库的情况下创建 Symfony 4 表单

Creating a Symfony 4 Form without Database

php

symfony-forms

symfony

symfony4