无法编辑已设置“setData”的表单 - Symfony3

Question

我的controller 中有一个function，可以让我编辑餐厅页面。

我需要setData 一些值，以便将它们从显示视图保留到编辑视图，并且我需要在city 和zipCode 字段上使用它。

$editForm->get('cityName')->setData($restaurant->getCity()->getName());
$editForm->get('cityZipCode')->setData($restaurant->getCity()->getZipCode());

但是当我使用 setData 时，我无法再编辑我的表单，因为出现此错误消息

You cannot change the data of a submitted form.

这里是控制器部分

public function editAction(Request $request, Restaurant $restaurant)
{
    $deleteForm = $this->createDeleteForm($restaurant);
    $editForm = $this->createForm(RestaurantType::class, $restaurant);
    $editForm->handleRequest($request);

    $editForm->get('cityName')->setData($restaurant->getCity()->getName());
    $editForm->get('cityZipCode')->setData($restaurant->getCity()->getZipCode());

    if ($editForm->isSubmitted() && $editForm->isValid()) {
        $em = $this->getDoctrine()->getManager();
        $cityManager = $this->container->get('admin.city_manager');
        $cityManager->newCity($editForm, $restaurant);

        $em->flush();

        return $this->redirectToRoute('admin_restaurant_show_fr', array('id' => $restaurant->getId()));
    }

    return $this->render('admin/restaurant/edit.html.twig', array(
        'restaurant' => $restaurant,
        'edit_form' => $editForm->createView(),
        'delete_form' => $deleteForm->createView(),
    ));
}

这里是FormType

    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('name', TextType::class, array(
                'label'                 => 'Nom',
            ))
            ->add('latitude', NumberType::class, array(
                'label'                 => 'Latitude',
            ))
            ->add('longitude', NumberType::class, array(
                'label'                 => 'Longitude',
            ))
            ->add('address', TextType::class, array(
                'label'                 => 'Adresse',
            ))
            ->add('cityName', TextType::class, array(
                'mapped'                => false,
                'label'                 => 'Ville'
            ))
            ->add('cityZipCode', TextType::class, array(
                'mapped'                => false,
                'label'                 => 'Code Postal'
            ))
}

如果您有任何可以帮助我并解决该问题的方法，我们将不胜感激。

Answer 1

一旦您创建了表单并调用了handleRequest，Symfony 就会使用该版本的表单进行处理（例如验证等）。 如果您在此之后更改表单，Symfony 将不高兴。

根据您要执行的操作以及定义实体/表单的方式，使用validation groups 或dynamic form events 来处理任何更改。

根据您显示的内容，为什么不修改表单以显示餐厅的城市名称，而不是尝试在控制器中设置它。
例如；

public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder
        ->add('name', TextType::class, array(
            'label'                 => 'Nom',
        ))
        ->add('latitude', NumberType::class, array(
            'label'                 => 'Latitude',
        ))
        ->add('longitude', NumberType::class, array(
            'label'                 => 'Longitude',
        ))
        ->add('address', TextType::class, array(
            'label'                 => 'Adresse',
        ));

    // if you want the fields not shown on the form
    if (! empty($options['data']->getCity()) {
        $builder->add('cityName', TextType::class, array(
            'data' => $options['data']->getCity()->getName()
            'mapped'                => false,
            'label'                 => 'Ville'
        ))
        ->add('cityZipCode', TextType::class, array(
            'data' => $options['data']->getCity()->getZipCode()
            'mapped'                => false,
            'label'                 => 'Code Postal'
        ));
    }
    // or if you want them there
    $cityName = '';
    $cityZipCode = '';
    if (! empty($options['data']->getCity()) {
        $cityName = $options['data']->getCity()->getName();
        $cityZipCode = $options['data']->getCity()->getZipCode();
    }
        $builder->add('cityName', TextType::class, array(
            'data' => $cityName
            'mapped'                => false,
            'label'                 => 'Ville'
        ))
        ->add('cityZipCode', TextType::class, array(
            'data' => $cityZipCode
            'mapped'                => false,
            'label'                 => 'Code Postal'
        ));
    }
}