Create form for service in Symfony2

Question

this is the code excerpt in the controller

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

this is my function in service

public function createQuestionForm($entity, $route)
{
    $form = $this->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;
}

Answer 1

The createForm() function is an alias in Symfony's Controller class . You will not have access to it from within your service. You'll want to either inject the Symfony container into your service or inject the form.factory service. For example:

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

and then in your class:

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;
    }