在Symfony2中创建服务表单

Question

这是控制器中的代码摘录

InputStream imported2Schema = ...getResourceAsStream("/com/path/to/Imported2.xsd");
Source imported2Source = new StreamSource(imported2Schema);
InputStream imported1Schema = ...getResourceAsStream("/com/path/to/Imported1.xsd");
Source imported1Source = new StreamSource(imported1Schema);
InputStream metadataSchema = ...getResourceAsStream("/com/path/to/metadata.xsd");
Source metadataSource = new StreamSource(metadataSchema);
Source[] schemaSources = new Source[] {imported2Source, imported1Source, metadataSource};
Schema schema = sf.newSchema(schemaSources);

这是我的服务功能

$service = $this->get('questions_service');
$form_question = $service->createQuestionForm($question, $this->generateUrl('create_question', array('adId' => $ad->getId())));

Answer 1

createForm()函数是Symfony's Controller class中的别名。您无法从服务中访问它。您需要将Symfony容器注入服务或注入form.factory服务。例如：

services:
    questions_service:
        class:        AppBundle\Service\QuestionsService
        arguments:    [form.factory]

然后在你的课堂上：

use Symfony\Component\Form\FormFactory;

class QuestionsService
{
    private $formFactory;

    public function __construct(FormFactory $formFactory)
    {
        $this->formFactory = $formFactory;
    }

    public function createQuestionForm($entity, $route)
    {
        $form = $this->formFactory->createForm(new QuestionType(), $entity, array(
            'action' => $route,
            'method' => 'POST',
        ));

        $form
            ->add('submit', 'submit', array(
                'label' => '>',
                'attr' => array('class' => 'button button-question button-message')
        ));

        return $form;
    }