og-8.x-1.x-dev/src/Form/OgMembershipTypeForm.php

<?php

declare(strict_types=1);

namespace Drupal\og\Form;

use Drupal\Core\DependencyInjection\AutowireTrait;
use Drupal\Core\Entity\BundleEntityFormBase;
use Drupal\Core\Entity\EntityFieldManagerInterface;
use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Form\FormStateInterface;

/**
 * Form handler for OG membership type forms.
 */
class OgMembershipTypeForm extends BundleEntityFormBase {

  use AutowireTrait;

  /**
   * Constructs the OgMembershipTypeForm object.
   *
   * @param \Drupal\Core\Entity\EntityFieldManagerInterface $entityFieldManager
   *   The entity field manager.
   */
  public function __construct(
    protected EntityFieldManagerInterface $entityFieldManager,
  ) {}

  /**
   * {@inheritdoc}
   */
  public function form(array $form, FormStateInterface $form_state) {
    $form = parent::form($form, $form_state);

    $type = $this->entity;
    if ($this->operation == 'add') {
      $form['#title'] = $this->t('Add membership type');
    }
    else {
      $form['#title'] = $this->t('Edit %label membership type', ['%label' => $type->label()]);
    }

    $form['name'] = [
      '#title' => $this->t('Name'),
      '#type' => 'textfield',
      '#default_value' => $type->label(),
      '#description' => $this->t('The human-readable name of this membership type.'),
      '#required' => TRUE,
      '#size' => 30,
    ];

    $form['type'] = [
      '#type' => 'machine_name',
      '#default_value' => $type->id(),
      '#maxlength' => EntityTypeInterface::BUNDLE_MAX_LENGTH,
      '#machine_name' => [
        'exists' => ['Drupal\og\Entity\OgMembershipType', 'load'],
        'source' => ['name'],
      ],
      '#description' => $this->t('A unique machine-readable name for this membership type. It must only contain lowercase letters, numbers, and underscores.'),
    ];
    return $this->protectBundleIdElement($form);
  }

  /**
   * {@inheritdoc}
   */
  protected function actions(array $form, FormStateInterface $form_state) {
    $actions = parent::actions($form, $form_state);
    $actions['submit']['#value'] = $this->t('Save membership type');
    $actions['delete']['#value'] = $this->t('Delete membership type');
    return $actions;
  }

  /**
   * {@inheritdoc}
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    parent::validateForm($form, $form_state);

    $id = trim($form_state->getValue('type'));
    // '0' is invalid, since elsewhere we check it using empty().
    if ($id == '0') {
      $form_state->setErrorByName('type', $this->t('Invalid machine-readable name. Enter a name other than %invalid.', ['%invalid' => $id]));
    }
  }

  /**
   * {@inheritdoc}
   */
  public function save(array $form, FormStateInterface $form_state) {
    $type = $this->entity;
    $type->set('type', trim($type->id()));
    $type->set('name', trim($type->label()));

    $status = $type->save();

    $t_args = ['%name' => $type->label()];

    if ($status == SAVED_UPDATED) {
      $this->messenger()->addMessage($this->t('The membership type %name has been updated.', $t_args));
    }
    elseif ($status == SAVED_NEW) {
      $this->messenger()->addMessage($this->t('The membership type %name has been added.', $t_args));
      $context = array_merge($t_args, ['link' => $type->toLink($this->t('View'), 'collection')->toString()]);
      $this->logger('og')->notice('Added membership type %name.', $context);
    }

    $this->entityFieldManager->clearCachedFieldDefinitions();
    $form_state->setRedirectUrl($type->toUrl('collection'));

    return $status;
  }

}