eca-1.0.x-dev/modules/form/src/Plugin/Action/FormSetMethod.php

<?php

namespace Drupal\eca_form\Plugin\Action;

use Drupal\Core\Action\Attribute\Action;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\eca\Attribute\EcaAction;
use Drupal\eca\Plugin\ECA\PluginFormTrait;

/**
 * Set the HTTP method to use when submitting the form.
 */
#[Action(
  id: 'eca_form_set_method',
  label: new TranslatableMarkup('Form: set method'),
  type: 'form',
)]
#[EcaAction(
  description: new TranslatableMarkup('Set the HTTP method to use when submitting the form.'),
  version_introduced: '1.1.0',
)]
class FormSetMethod extends FormActionBase {

  use PluginFormTrait;

  /**
   * {@inheritdoc}
   */
  public function execute(): void {
    if (!($form = &$this->getCurrentForm())) {
      return;
    }
    $method = $this->configuration['method'];
    if ($method === '_eca_token') {
      $method = $this->getTokenValue('method', 'post');
    }
    $form['#method'] = $method;
  }

  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration(): array {
    return [
      'method' => 'post',
    ] + parent::defaultConfiguration();
  }

  /**
   * {@inheritdoc}
   */
  public function buildConfigurationForm(array $form, FormStateInterface $form_state): array {
    $form['method'] = [
      '#type' => 'select',
      '#title' => $this->t('Method'),
      '#description' => $this->t('The method of a form action <em>GET</em> or <em>POST</em>.'),
      '#options' => [
        'get' => $this->t('GET'),
        'post' => $this->t('POST'),
      ],
      '#weight' => -10,
      '#default_value' => $this->configuration['method'],
      '#required' => TRUE,
      '#eca_token_select_option' => TRUE,
    ];
    return parent::buildConfigurationForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function submitConfigurationForm(array &$form, FormStateInterface $form_state): void {
    parent::submitConfigurationForm($form, $form_state);
    $this->configuration['method'] = $form_state->getValue('method');
  }

}