Question

大家好，我上周在数据变换器上遇到困难。

它的目标是转换实体中的TextType（Departement）因为我可以通过EntityType来完成它。

我已经在Symfony Doc上阅读了有关它的整个文档，但错误总是一样的。

错误是：

捕获致命错误：参数1传递给ExellBundle \ Form \ Type \ SearchType :: __ construct（）必须是ExellBundle \ Form \ DataTransfomer \ DepartementTransformer的实例，没有给出，在/ Users / maxime / Documents / www /中调用第92行的exellapp / vendor / symfony / symfony / src / Symfony / Component / Form / FormRegistry.php已定义

DepartementTransformer.php

<?php

  namespace ExellBundle\Form\DataTransfomer;

  use ExellBundle\Entity\Departement;
  use Doctrine\ORM\EntityManagerInterface;
  use Symfony\Component\Form\DataTransformerInterface;
  use Symfony\Component\Form\Exception\TransformationFailedException;


 class DepartementTransformer implements DataTransformerInterface
{

private $em;

public function __construct(EntityManagerInterface $em)
{
    $this->em = $em;
}

/**
 * @param Departement|null $departement
 * @return string
 */
public function transform($departement)
{
    // TODO: Implement transform() method.
    if(null == $departement)
    {
        return '';
    }
    return $departement->getId();
}


/**
 * @param string $departementNumber
 * @return Departement|null
 * @throws TransformationFailedException if object (departement) is not found
 */
public function reverseTransform($departementNumber)
{
    // TODO: Implement reverseTransform() method.
    if(!$departementNumber)
    {
        return;
    }
    $departement  = $this->em->getRepository('ExellBundle:Departement')->find($departementNumber);

    if(null === $departement)
    {
        throw  new TransformationFailedException(sprintf(
            'Le departement %s n\'existe pas ! ',
            $departementNumber
        ));
    }

    return $departement;
}

}

SearchType.php

<?php

namespace ExellBundle\Form\Type;

use ExellBundle\Form\DataTransfomer\DepartementTransformer;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use ExellBundle\Entity\Bien;

class SearchType extends AbstractType
{


private $transformer;

public function __construct(DepartementTransformer $transformer)
{
    $this->transformer = $transformer;
}

/**
 * {@inheritdoc}
 */
public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder->add('typeInvest',EntityType::class,array(
        'placeholder' => 'Veuillez choisir',
        'label' => 'Type d\'investistement',
        'class' => 'ExellBundle\Entity\TypeInvest',
        'choice_label' => 'libelle',
        'expanded' => false,
        'multiple' => false,
        'attr' => [
            'class' => 'form-inline',
            'required' => true,
        ]
    ))
    /*->add('departement',EntityType::class,array(
        'placeholder' => 'Veuillez renseigner le Département',
        'class' => 'ExellBundle\Entity\Departement',
        'attr' => [
            'class' => 'form-inline',
            'required' => true,
        ],
    ));*/

    ->add('departement',TextType::class,array(
        'invalid_message' => ' Cela n\'est pas un numéro de département valide',
    ));

    $builder->get('departement')->addModelTransformer($this->transformer);

}

/**
 * @param OptionsResolver $resolver
 */
public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setDefaults(array(
        'data_class' => Bien::class,
    ));
}

/**
 * {@inheritdoc}
 */
public function getBlockPrefix()
{
    return 'exellbundle_bien';
}

}

Symfony 3 - 数据变换器

0 个答案: