DeleteForm.php in Optimizely 8.3

Namespace

Drupal\optimizely\Form

File

src/Form/DeleteForm.php

<?php

namespace Drupal\optimizely\Form;

use Drupal\Core\Form\ConfirmFormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;
use Drupal\optimizely\Util\CacheRefresher;

/**
 * Implements the confirmation form for deleting a project.
 */
class DeleteForm extends ConfirmFormBase {
  private $oid = NULL;

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'optimizely-delete-page-confirm';
  }

  /**
   * {@inheritdoc}
   */
  public function getQuestion() {

    // More like a heading than a question.
    return $this
      ->t('Delete');
  }

  /**
   * {@inheritdoc}
   */
  public function getDescription() {
    return $this
      ->t('Are you sure you want to delete this configuration?
                    <p>This action cannot be undone.</p>');
  }

  /**
   * {@inheritdoc}
   */
  public function getConfirmText() {

    // Default is 'Confirm'.
    return $this
      ->t('Delete');
  }

  /**
   * {@inheritdoc}
   */
  public function getCancelUrl() {
    return new Url('optimizely.listing');
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state, $oid = NULL) {

    // Implement this method so we can record the project id for submitForm().
    $this->oid = $oid;
    return parent::buildForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {

    // Prevent deletion of default project.
    if ($this->oid == 1) {
      drupal_set_message($this
        ->t('Default project cannot be deleted.'), 'error');

      // Return to project listing page.
      $form_state
        ->setRedirect('optimizely.listing');
      return;
    }

    // Lookup entry details before delete.
    $query = \Drupal::database()
      ->select('optimizely', 'o', [
      'target' => 'slave',
    ])
      ->fields('o', [
      'path',
      'enabled',
    ])
      ->condition('o.oid', $this->oid, '=');
    $record = $query
      ->execute()
      ->fetchObject();

    // Delete entry in database based on the target $oid.
    $query = \Drupal::database()
      ->delete('optimizely')
      ->condition('oid', $this->oid);
    $query
      ->execute();

    // Only clear page cache for entries that are active when deleted.
    if ($record->enabled) {

      // Always serialized when saved.
      $path_array = unserialize($record->path);
      CacheRefresher::doRefresh($path_array);
    }
    drupal_set_message(t('The project entry has been deleted.'), 'status');

    // Return to project listing page.
    $form_state
      ->setRedirect('optimizely.listing');
  }

}

Classes

Name	Description
DeleteForm	Implements the confirmation form for deleting a project.