FlaggingCollectionRevisionRevertForm.php in Flag Lists 8

Namespace

Drupal\flag_lists\Form

File

src/Form/FlaggingCollectionRevisionRevertForm.php

<?php

namespace Drupal\flag_lists\Form;

use Drupal\Core\Datetime\DateFormatterInterface;
use Drupal\Core\Entity\EntityStorageInterface;
use Drupal\Core\Form\ConfirmFormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;
use Drupal\flag_lists\Entity\FlaggingCollectionInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Provides a form for reverting a Flagging collection revision.
 *
 * @ingroup flag_lists
 */
class FlaggingCollectionRevisionRevertForm extends ConfirmFormBase {

  /**
   * The Flagging collection revision.
   *
   * @var \Drupal\flag_lists\Entity\FlaggingCollectionInterface
   */
  protected $revision;

  /**
   * The Flagging collection storage.
   *
   * @var \Drupal\Core\Entity\EntityStorageInterface
   */
  protected $flaggingCollectionStorage;

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

  /**
   * Constructs a new FlaggingCollectionRevisionRevertForm.
   *
   * @param \Drupal\Core\Entity\EntityStorageInterface $entity_storage
   *   The Flagging collection storage.
   * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
   *   The date formatter service.
   */
  public function __construct(EntityStorageInterface $entity_storage, DateFormatterInterface $date_formatter) {
    $this->flaggingCollectionStorage = $entity_storage;
    $this->dateFormatter = $date_formatter;
  }

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

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

  /**
   * {@inheritdoc}
   */
  public function getQuestion() {
    return $this
      ->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.flagging_collection.version_history', [
      'flagging_collection' => $this->revision
        ->id(),
    ]);
  }

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

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

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state, $flagging_collection_revision = NULL) {
    $this->revision = $this->flaggingCollectionStorage
      ->loadRevision($flagging_collection_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 = $this
      ->t('Copy of the revision from %date.', [
      '%date' => $this->dateFormatter
        ->format($original_revision_timestamp),
    ]);
    $this->revision
      ->save();
    $this
      ->logger('content')
      ->notice('Flagging collection: reverted %title revision %revision.', [
      '%title' => $this->revision
        ->label(),
      '%revision' => $this->revision
        ->getRevisionId(),
    ]);
    $this
      ->messenger()
      ->addMessage(t('Flagging collection %title has been reverted to the revision from %revision-date.', [
      '%title' => $this->revision
        ->label(),
      '%revision-date' => $this->dateFormatter
        ->format($original_revision_timestamp),
    ]));
    $form_state
      ->setRedirect('entity.flagging_collection.version_history', [
      'flagging_collection' => $this->revision
        ->id(),
    ]);
  }

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

}

Classes

Name	Description
FlaggingCollectionRevisionRevertForm	Provides a form for reverting a Flagging collection revision.