TestSettingsValidationBlock.php in Drupal 10

Namespace

Drupal\block_test\Plugin\Block

File

core/modules/block/tests/modules/block_test/src/Plugin/Block/TestSettingsValidationBlock.php

<?php

namespace Drupal\block_test\Plugin\Block;

use Drupal\Core\Block\BlockBase;
use Drupal\Core\Form\FormStateInterface;

/**
 * Provides a test settings validation block.
 *
 * @Block(
 *  id = "test_settings_validation",
 *  admin_label = @Translation("Test settings validation block"),
 * )
 */
class TestSettingsValidationBlock extends BlockBase {

  /**
   * {@inheritdoc}
   */
  public function blockForm($form, FormStateInterface $form_state) {
    return [
      'digits' => [
        '#type' => 'textfield',
      ],
    ] + $form;
  }

  /**
   * {@inheritdoc}
   */
  public function blockValidate($form, FormStateInterface $form_state) {
    if (!ctype_digit($form_state
      ->getValue('digits'))) {
      $form_state
        ->setErrorByName('digits', $this
        ->t('Only digits are allowed'));
    }
  }

  /**
   * {@inheritdoc}
   */
  public function build() {
    return [
      '#markup' => 'foo',
    ];
  }

}

Classes

Name	Description
TestSettingsValidationBlock	Provides a test settings validation block.