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)
{
$builder->add{(}^{\prime }nam{e}^{\prime },TextType::class,{[}^{\prime }gette{r}^{\prime }=>function(Person$person, FormInterface form): string { return person->getUserData()->getFirstName();
},
‘setter’ => function (Person &$person,?string$name, FormInterface form): void { person->rename($name);
},
])

        // ...
    ;
}

// ...

}