EthikTag/src/Form/DonType.php

<?php

namespace App\Form;

use App\Entity\Don;
use App\Entity\DonCat;
use App\Entity\Patient;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;
use Symfony\Component\OptionsResolver\OptionsResolver;

class DonType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options): void
    {
        $builder
            ->add('codeBarre')
            ->add('donCat', EntityType::class, [
                'class'=> DonCat::class,
                'choice_label'=> 'name'
            ])
            ->add('nbreTube')
            ->add('donneur', EntityType::class, [
                'class'=> Patient::class,
            ])
        ;
    }

    public function configureOptions(OptionsResolver $resolver): void
    {
        $resolver->setDefaults([
            'data_class' => Don::class,
        ]);
    }
}