Symfony2 - 为实体字段设置选定的值

Question

我正在尝试在实体字段中设置选定的值.按照很多讨论,我看到关于这个话题,我想设置的data选项,但这不选择任何默认值:

class EventType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('place', 'entity', array(
                'class' => 'RoyalMovePhotoBundle:Place',
                'property' => 'name',
                'empty_value' => "Choisissez un club",
                'mapped' => false,
                'property_path' => false,
                'data' => 2
            ))
            ->add('begin')
            ->add('end')
            ->add('title')
            ->add('description')
        ;
    }

    // ...
}

通过寻找更多,我发现有些人不得不停用映射到实体的表单.这似乎合乎逻辑,所以我试图添加'mapped' => false选项,但没有成功......

如果它可以帮助,这是我的控制器:

class EventController extends Controller
{
    // ...

    public function addAction()
    {
        $request = $this->getRequest();
        $em = $this->getDoctrine()->getManager();

        $event = new Event();
        $form = $this->createForm(new EventType(), $event);

        $formHandler = new EventHandler($form, $request, $em);

        if($formHandler->process()) {
            $this->get('session')->getFlashBag()->add('success', "L'évènement a bien été ajouté.");
            return $this->redirect($this->generateUrl('photo_event_list'));
        }

        return $this->render('RoyalMovePhotoBundle:Event:add.html.twig', array(
            'form' => $form->createView()
        ));
    }
}

和EventHandler班级:

class EventHandler extends AbstractHandler
{
    public function process()
    {
        $form = $this->form;
        $request = $this->request;

        if($request->isMethod('POST')) {
            $form->bind($request);

            if($form->isValid()) {
                $this->onSuccess($form->getData());
                return true;
            }
        }

        return false;
    }

    public function onSuccess($entity)
    {
        $em = $this->em;

        $em->persist($entity);
        $em->flush();
    }
}

我现在有点卡住,有没有人有想法？

Answer 1

您只需要设置字段的数据:

    
    class EventController extends Controller
    {
        // ...

        public function addAction()
        {
           $request = $this->getRequest();
            $em = $this->getDoctrine()->getManager();

            $event = new Event();
            $form = $this->createForm(new EventType(), $event);

            // -------------------------------------------
            // Suppose you have a place entity..
            $form->get('place')->setData($place);
            // That's all..
            // -------------------------------------------

            $formHandler = new EventHandler($form, $request, $em);

            if($formHandler->process()) {
                $this->get('session')->getFlashBag()->add('success', "L'évènement a bien été ajouté.");
                return $this->redirect($this->generateUrl('photo_event_list'));
            }

            return $this->render('RoyalMovePhotoBundle:Event:add.html.twig', array(
                'form' => $form->createView()
            ));
        }
    }
    

Answer 2

为了在表单中显示选项,您应该为实体本身设置相应的值.

$place = $repository->find(2);
$entity->setPlace($place);
$form = $this->createForm(new SomeFormType(), $entity);
....