function node_preview

Generates a node preview.

@since 1.11.0

Parameters

$node_tempstore_id: The tempstore ID of the node being previewed.

$node_type: The node type of the node being previewed.

Return value

An HTML-formatted string of a node preview.:

See also

node_form_preview()

File

modules/node/node.pages.inc, line 574

Callbacks for adding, editing, and deleting content and managing revisions.

Code

function node_preview($node_tempstore_id, $node_type) {
  // The tempstore object may have expired or an invalid ID submitted. Use the
  // node object if available, otherwise return to the node edit page.
  if (!$node = node_get_node_tempstore($node_tempstore_id)) {
    backdrop_set_message(t('The preview ID is invalid or the stored preview has expired.'), 'error');
    backdrop_goto('node/add/' . $node_type);
  }

  // Set status to true so we don't get the 'unpublished' CSS.
  $node->status = TRUE;

  _field_invoke_multiple('load', 'node', array($node->nid => $node));
  // Load the author's name when needed.
  if (isset($node->name)) {
    // The use of isset() is mandatory in the context of user IDs, because
    // user ID 0 denotes the anonymous user.
    if ($user = user_load_by_name($node->name)) {
      $node->uid = $user->uid;
    }
    else {
      $node->uid = 0;
    }
  }
  elseif ($node->uid) {
    $user = user_load($node->uid);
    $node->name = $user->name;
  }

  $node->changed = REQUEST_TIME;

  // Get the view mode to render the preview in.
  $view_mode = empty($_GET['view_mode']) ? 'full' : $_GET['view_mode'];

  // Property so we can manipulate $page in template_preprocess_node.
  if ($view_mode == 'full' || $view_mode == 'default') {
    backdrop_set_title($node->title);
    $node->in_preview = TRUE;
  }

  $build = array();
  $build['#attached']['js'][] = backdrop_get_path('module', 'node') . '/js/node.preview.js';
  $build['#attached']['css'][] = backdrop_get_path('module', 'node') . '/css/node.preview.css';
  $build['preview_form_select'] = array(
    '#type' => 'container',
    '#attributes' => array(
      'class' => array('node-preview-container', 'container-inline')
    ),
  );

  $form = backdrop_get_form('node_preview_banner_form', $node, $node_tempstore_id);
  $build['preview_form_select']['view-mode'] = $form;
  $build['preview'] = node_view($node, $view_mode);
  return $build;
}