Callback Functions To Get/Set Form Fields

Description

Use callback functions to get/set form fields. Data mapper is no longer needed when getter/setter methods don’t directly correlate to property names.

Syntax

// src/Form/Type/ProductType.php
namespace App\Form\Type;
 
use App\Entity\Person;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Form\FormInterface;
 
class PersonType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('name', TextType::class, [
                'getter' => function (Person $person, FormInterface $form): string {
                    return $person->getUserData()->getFirstName();
                },
                'setter' => function (Person &$person, ?string $name, FormInterface $form): void {
                    $person->rename($name);
                },
            ])
 
            // ...
        ;
    }
 
    // ...
}