New in Symfony 5.2: Form Mapping Callbacks

New in Symfony 5.2: Form Mapping Callbacks

New in Symfony 5.2: Form mapping callbacks. In Symfony 5.2 you can use PHP callbacks to get/set the form field values from/into the related object/array.

Sometimes, the objects handled with Symfony forms don’t define the expected getter/setter methods (e.g. getName() and setName()) but other methods better aligned with the application needs (e.g. getName() and rename()).

In those cases, you can use a form data mapper to move the object data into the form fields and the other way around. In Symfony 5.2 we’ve improved this to allow using callback functions to get/set form fields. You only need to define the new getter or setter options (or both) and Symfony will run that callback to get/set the value from/into the object/array:

// 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 ProductType extends AbstractType
    public function buildForm(FormBuilderInterface $builder, array $options)
            ->add('name', TextType::class, [
                'getter' => function (Person $person, FormInterface $form): string {
                    return $person->firstName().' '.$person->lastName();
                'setter' => function (Person &$person, ?string $name, FormInterface $form): void {

            // ...

    // ...

This new feature means that you no longer need to create a data mapper to solve this problem. However, you still need to use data mappers in certain situations (when several form fields are mapped to a single method, when the mapping of the model depends on the submitted form data, etc.)

symfony php web-development programming developer

Bootstrap 5 Complete Course with Examples

Bootstrap 5 Tutorial - Bootstrap 5 Crash Course for Beginners

Nest.JS Tutorial for Beginners

Hello Vue 3: A First Look at Vue 3 and the Composition API

Building a simple Applications with Vue 3

Deno Crash Course: Explore Deno and Create a full REST API with Deno

How to Build a Real-time Chat App with Deno and WebSockets

Convert HTML to Markdown Online

HTML entity encoder decoder Online

PHP Web Application Development Company

As a top **PHP Web Application Development Company in USA**[]( ""), we at Data EximIT have...

PHP Website Development

Skenix Infotech is a leading PHP Web Development Company that helps companies get results with industry best practices. Get affordable PHP Development Services.

Hire Dedicated PHP Developer

Looking to hire affordable yet experienced PHP developers? **[Hire Dedicated PHP Developer]( "Hire Dedicated PHP Developer")**, who can convert your idea to reality, within the stipulated...

Hire PHP Developer

Looking to develop a PHP based website from scratch or revamp your existing website? **[]( "")** has always been an industry leader for companies and business owners looking to hire...

Advantages of Hiring PHP Developer for your Website Project

PHP - Hypertext pre-processor, a scripting language used by many people in developing web pages, but most of us are unaware even of the full form. To train someone and make them learn this whole language is as difficult and time-consuming as it is...