HiddenEntityExtension.php 992 Bytes
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<?php

namespace App\Form;

use Symfony\Component\Form\AbstractTypeExtension;
use Symfony\Component\Form\Extension\Core\Type\HiddenType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;

class HiddenEntityExtension extends AbstractTypeExtension
{
    public static function getExtendedTypes()
    {
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        return [HiddenType::class];
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    }

    /**
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     * Add the entity_class option.
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     *
     * @param OptionsResolver $resolver
     */
    public function configureOptions(OptionsResolver $resolver)
    {
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        $resolver->setDefined(['em']);
        $resolver->setDefined(['entity_class']);
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    }

    public function buildForm(FormBuilderInterface $builder, array $options)
    {
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        if (isset($options['em']) && isset($options['entity_class'])) {
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            $builder->addModelTransformer(new EntityToIdTransformer(
                $options['em'],
                $options['entity_class']
            ));
        }
    }
}