LabeledFormTrait.php in Extensible BBCode 8.3

Namespace

Drupal\xbbcode\Form

File

src/Form/LabeledFormTrait.php

<?php

namespace Drupal\xbbcode\Form;

use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\StringTranslation\StringTranslationTrait;

/**
 * Helper function for adding label fields to an entity form.
 *
 * @package Drupal\xbbcode\Form
 */
trait LabeledFormTrait {
  use StringTranslationTrait;

  /**
   * Gets the form entity.
   *
   * The form entity which has been used for populating form element defaults.
   *
   * Redeclared here because PHP traits cannot implement interfaces.
   *
   * @return \Drupal\Core\Entity\EntityInterface
   *   The current form entity.
   *
   * @see \Drupal\Core\Entity\EntityFormInterface::getEntity()
   */
  public abstract function getEntity() : EntityInterface;

  /**
   * Add label fields to the form array.
   *
   * @param array $form
   *   Form array.
   *
   * @return array
   *   Form array.
   */
  public function addLabelFields(array $form) : array {
    $form['label'] = [
      '#type' => 'textfield',
      '#title' => $this
        ->t('Label'),
      '#default_value' => $this
        ->getEntity()
        ->label(),
      '#maxlength' => 255,
      '#required' => TRUE,
      '#weight' => -30,
    ];
    $form['id'] = [
      '#type' => 'machine_name',
      '#default_value' => $this
        ->getEntity()
        ->id(),
      '#maxlength' => 255,
      '#machine_name' => [
        'exists' => [
          $this,
          'exists',
        ],
        'source' => [
          'label',
        ],
      ],
      '#disabled' => !$this
        ->getEntity()
        ->isNew(),
      '#weight' => -20,
    ];
    return $form;
  }

}

Traits

Name	Description
LabeledFormTrait	Helper function for adding label fields to an entity form.