bjo3rnf · November 19, 2021 17:19 · bjo3rnf · Mar 30, 2014 · skonsoft · Oct 20, 2014
diff --git a/EntityHiddenType.php b/EntityHiddenType.php
 <?php

 namespace Dpn\ToolsBundle\Form\Type;

 use Symfony\Component\Form\AbstractType;
 use Dpn\ToolsBundle\Form\DataTransformer\EntityToIdTransformer;
 use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\OptionsResolver\OptionsResolverInterface;
 use Doctrine\Common\Persistence\ObjectManager;

 class EntityHiddenType extends AbstractType
 {
    /**
     * @var ObjectManager
     */
    protected $objectManager;

    public function __construct(ObjectManager $objectManager)
    {
        $this->objectManager = $objectManager;
    }

    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $transformer = new EntityToIdTransformer($this->objectManager, $options['class']);
        $builder->addModelTransformer($transformer);
    }

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver
            ->setRequired(array('class'))
            ->setDefaults(array(
                'invalid_message' => 'The entity does not exist.',
            ))
        ;
    }

    public function getParent()
    {
        return 'hidden';
    }

    public function getName()
    {
        return 'entity_hidden';
    }
 }
diff --git a/EntityToIdTransformer.php b/EntityToIdTransformer.php
 <?php

 namespace Dpn\ToolsBundle\Form\DataTransformer;

 use Symfony\Component\Form\DataTransformerInterface;
 use Symfony\Component\Form\Exception\TransformationFailedException;
 use Doctrine\Common\Persistence\ObjectManager;

 class EntityToIdTransformer implements DataTransformerInterface
 {
    /**
     * @var ObjectManager
     */
    protected $objectManager;

    /**
     * @var string
     */
    protected $class;

    public function __construct(ObjectManager $objectManager, $class)
    {
        $this->objectManager = $objectManager;
        $this->class = $class;
    }

    public function transform($entity)
    {
        if (null === $entity) {
            return;
        }

        return $entity->getId();
    }

    public function reverseTransform($id)
    {
        if (!$id) {
            return null;
        }

        $entity = $this->objectManager
                       ->getRepository($this->class)
                       ->find($id);

        if (null === $entity) {
            throw new TransformationFailedException();
        }

        return $entity;
    }
 }
	<?php

	namespace Dpn\ToolsBundle\Form\Type;

	use Symfony\Component\Form\AbstractType;
	use Dpn\ToolsBundle\Form\DataTransformer\EntityToIdTransformer;
	use Symfony\Component\Form\FormBuilderInterface;
	use Symfony\Component\OptionsResolver\OptionsResolverInterface;
	use Doctrine\Common\Persistence\ObjectManager;

	class EntityHiddenType extends AbstractType
	{
	/**
	* @var ObjectManager
	*/
	protected $objectManager;

	public function __construct(ObjectManager $objectManager)
	{
	$this->objectManager = $objectManager;
	}

	public function buildForm(FormBuilderInterface $builder, array $options)
	{
	$transformer = new EntityToIdTransformer($this->objectManager, $options['class']);
	$builder->addModelTransformer($transformer);
	}

	public function setDefaultOptions(OptionsResolverInterface $resolver)
	{
	$resolver
	->setRequired(array('class'))
	->setDefaults(array(
	'invalid_message' => 'The entity does not exist.',
	))
	;
	}

	public function getParent()
	{
	return 'hidden';
	}

	public function getName()
	{
	return 'entity_hidden';
	}
	}
	<?php

	namespace Dpn\ToolsBundle\Form\DataTransformer;

	use Symfony\Component\Form\DataTransformerInterface;
	use Symfony\Component\Form\Exception\TransformationFailedException;
	use Doctrine\Common\Persistence\ObjectManager;

	class EntityToIdTransformer implements DataTransformerInterface
	{
	/**
	* @var ObjectManager
	*/
	protected $objectManager;

	/**
	* @var string
	*/
	protected $class;

	public function __construct(ObjectManager $objectManager, $class)
	{
	$this->objectManager = $objectManager;
	$this->class = $class;
	}

	public function transform($entity)
	{
	if (null === $entity) {
	return;
	}

	return $entity->getId();
	}

	public function reverseTransform($id)
	{
	if (!$id) {
	return null;
	}

	$entity = $this->objectManager
	->getRepository($this->class)
	->find($id);

	if (null === $entity) {
	throw new TransformationFailedException();
	}

	return $entity;
	}
	}