Drupal Form API

Simple Form (FormBase)

// src/Form/MyForm.php
namespace Drupal\my_module\Form;

use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

final class MyForm extends FormBase {

  public function __construct(
    private readonly EntityTypeManagerInterface $entityTypeManager,
  ) {}