public function NodeController::revisionOverview

Generates an overview table of older revisions of a node.

Parameters

\Drupal\node\NodeInterface $node: A node object.

Return value

array An array as expected by \Drupal\Core\Render\RendererInterface::render().

File

core/modules/node/src/Controller/NodeController.php, line 144

Class

NodeController

Returns responses for Node routes.

Namespace

Code

public function revisionOverview(NodeInterface $node) {

  // Always use the latest revision in the current content language to
  // determine if this node has translations. This supports showing the
  // correct translation revisions for translations that only have.
  // non-default revisions.
  $node = $this->entityRepository
    ->getActive($node
    ->getEntityTypeId(), $node
    ->id());
  $langcode = $node
    ->language()
    ->getId();
  $language_name = $node
    ->language()
    ->getName();
  $languages = $node
    ->getTranslationLanguages();
  $has_translations = count($languages) > 1;
  $node_storage = $this
    ->entityTypeManager()
    ->getStorage('node');
  $build['#title'] = $has_translations ? $this
    ->t('@language_name revisions for %title', [
    '@language_name' => $language_name,
    '%title' => $node
      ->label(),
  ]) : $this
    ->t('Revisions for %title', [
    '%title' => $node
      ->label(),
  ]);
  $header = [
    $this
      ->t('Revision'),
    $this
      ->t('Operations'),
  ];
  $rows = [];
  $current_revision_displayed = FALSE;
  foreach ($this
    ->getRevisionIds($node, $node_storage) as $vid) {

    /** @var \Drupal\node\NodeInterface $revision */
    $revision = $node_storage
      ->loadRevision($vid);

    // Only show revisions that are affected by the language that is being
    // displayed.
    if ($revision
      ->hasTranslation($langcode) && $revision
      ->getTranslation($langcode)
      ->isRevisionTranslationAffected()) {
      $username = [
        '#theme' => 'username',
        '#account' => $revision
          ->getRevisionUser(),
      ];

      // Use revision link to link to revisions that are not active.
      $date = $this->dateFormatter
        ->format($revision->revision_timestamp->value, 'short');

      // We treat also the latest translation-affecting revision as current
      // revision, if it was the default revision, as its values for the
      // current language will be the same of the current default revision in
      // this case.
      $is_current_revision = $revision
        ->isDefaultRevision() || !$current_revision_displayed && $revision
        ->wasDefaultRevision();
      if (!$is_current_revision) {
        $link = Link::fromTextAndUrl($date, new Url('entity.node.revision', [
          'node' => $node
            ->id(),
          'node_revision' => $vid,
        ]))
          ->toString();
      }
      else {
        $link = $node
          ->toLink($date)
          ->toString();
        $current_revision_displayed = TRUE;
      }
      $row = [];
      $column = [
        'data' => [
          '#type' => 'inline_template',
          '#template' => '{% trans %}{{ date }} by {{ username }}{% endtrans %}{% if message %}<p class="revision-log">{{ message }}</p>{% endif %}',
          '#context' => [
            'date' => $link,
            'username' => $this->renderer
              ->renderInIsolation($username),
            'message' => [
              '#markup' => $revision->revision_log->value,
              '#allowed_tags' => Xss::getHtmlTagList(),
            ],
          ],
        ],
      ];

      // @todo Simplify once https://www.drupal.org/node/2334319 lands.
      $this->renderer
        ->addCacheableDependency($column['data'], $username);
      $row[] = $column;
      if ($is_current_revision) {
        $row[] = [
          'data' => [
            '#prefix' => '<em>',
            '#markup' => $this
              ->t('Current revision'),
            '#suffix' => '</em>',
          ],
        ];
        $rows[] = [
          'data' => $row,
          'class' => [
            'revision-current',
          ],
        ];
      }
      else {
        $links = [];
        if ($revision
          ->access('revert revision')) {
          $links['revert'] = [
            'title' => $vid < $node
              ->getRevisionId() ? $this
              ->t('Revert') : $this
              ->t('Set as current revision'),
            'url' => $has_translations ? Url::fromRoute('node.revision_revert_translation_confirm', [
              'node' => $node
                ->id(),
              'node_revision' => $vid,
              'langcode' => $langcode,
            ]) : Url::fromRoute('node.revision_revert_confirm', [
              'node' => $node
                ->id(),
              'node_revision' => $vid,
            ]),
          ];
        }
        if ($revision
          ->access('delete revision')) {
          $links['delete'] = [
            'title' => $this
              ->t('Delete'),
            'url' => Url::fromRoute('node.revision_delete_confirm', [
              'node' => $node
                ->id(),
              'node_revision' => $vid,
            ]),
          ];
        }
        $row[] = [
          'data' => [
            '#type' => 'operations',
            '#links' => $links,
          ],
        ];
        $rows[] = $row;
      }
    }
  }
  $build['node_revisions_table'] = [
    '#theme' => 'table',
    '#rows' => $rows,
    '#header' => $header,
    '#attached' => [
      'library' => [
        'node/drupal.node.admin',
      ],
    ],
    '#attributes' => [
      'class' => [
        'node-revision-table',
      ],
    ],
  ];
  $build['pager'] = [
    '#type' => 'pager',
  ];
  return $build;
}