NodeRevisionRevertForm.php in Zircon Profile 8.0

Contains \Drupal\node\Form\NodeRevisionRevertForm.

Namespace

Drupal\node\Form

File

core/modules/node/src/Form/NodeRevisionRevertForm.php

<?php

/**
 * @file
 * Contains \Drupal\node\Form\NodeRevisionRevertForm.
 */
namespace Drupal\node\Form;

use Drupal\Core\Datetime\DateFormatter;
use Drupal\Core\Entity\EntityStorageInterface;
use Drupal\Core\Form\ConfirmFormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;
use Drupal\node\NodeInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Provides a form for reverting a node revision.
 */
class NodeRevisionRevertForm extends ConfirmFormBase {

  /**
   * The node revision.
   *
   * @var \Drupal\node\NodeInterface
   */
  protected $revision;

  /**
   * The node storage.
   *
   * @var \Drupal\Core\Entity\EntityStorageInterface
   */
  protected $nodeStorage;

  /**
   * The date formatter service.
   *
   * @var \Drupal\Core\Datetime\DateFormatter
   */
  protected $dateFormatter;

  /**
   * Constructs a new NodeRevisionRevertForm.
   *
   * @param \Drupal\Core\Entity\EntityStorageInterface $node_storage
   *   The node storage.
   * @param \Drupal\Core\Datetime\DateFormatter $date_formatter
   *   The date formatter service.
   */
  public function __construct(EntityStorageInterface $node_storage, DateFormatter $date_formatter) {
    $this->nodeStorage = $node_storage;
    $this->dateFormatter = $date_formatter;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('entity.manager')
      ->getStorage('node'), $container
      ->get('date.formatter'));
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'node_revision_revert_confirm';
  }

  /**
   * {@inheritdoc}
   */
  public function getQuestion() {
    return t('Are you sure you want to revert to the revision from %revision-date?', [
      '%revision-date' => $this->dateFormatter
        ->format($this->revision
        ->getRevisionCreationTime()),
    ]);
  }

  /**
   * {@inheritdoc}
   */
  public function getCancelUrl() {
    return new Url('entity.node.version_history', array(
      'node' => $this->revision
        ->id(),
    ));
  }

  /**
   * {@inheritdoc}
   */
  public function getConfirmText() {
    return t('Revert');
  }

  /**
   * {@inheritdoc}
   */
  public function getDescription() {
    return '';
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state, $node_revision = NULL) {
    $this->revision = $this->nodeStorage
      ->loadRevision($node_revision);
    $form = parent::buildForm($form, $form_state);
    return $form;
  }

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

    // The revision timestamp will be updated when the revision is saved. Keep
    // the original one for the confirmation message.
    $original_revision_timestamp = $this->revision
      ->getRevisionCreationTime();
    $this->revision = $this
      ->prepareRevertedRevision($this->revision, $form_state);
    $this->revision->revision_log = t('Copy of the revision from %date.', [
      '%date' => $this->dateFormatter
        ->format($original_revision_timestamp),
    ]);
    $this->revision
      ->save();
    $this
      ->logger('content')
      ->notice('@type: reverted %title revision %revision.', [
      '@type' => $this->revision
        ->bundle(),
      '%title' => $this->revision
        ->label(),
      '%revision' => $this->revision
        ->getRevisionId(),
    ]);
    drupal_set_message(t('@type %title has been reverted to the revision from %revision-date.', [
      '@type' => node_get_type_label($this->revision),
      '%title' => $this->revision
        ->label(),
      '%revision-date' => $this->dateFormatter
        ->format($original_revision_timestamp),
    ]));
    $form_state
      ->setRedirect('entity.node.version_history', array(
      'node' => $this->revision
        ->id(),
    ));
  }

  /**
   * Prepares a revision to be reverted.
   *
   * @param \Drupal\node\NodeInterface $revision
   *   The revision to be reverted.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   *
   * @return \Drupal\node\NodeInterface
   *   The prepared revision ready to be stored.
   */
  protected function prepareRevertedRevision(NodeInterface $revision, FormStateInterface $form_state) {
    $revision
      ->setNewRevision();
    $revision
      ->isDefaultRevision(TRUE);
    return $revision;
  }

}

Classes

Name	Description
NodeRevisionRevertForm	Provides a form for reverting a node revision.