Implements hook_node_view().
function book_node_view(EntityInterface $node, EntityDisplay $display, $view_mode) {
if ($view_mode == 'full') {
if (!empty($node->book['bid']) && empty($node->in_preview)) {
$book_navigation = array(
'#theme' => 'book_navigation',
'#book_link' => $node->book,
);
$node->content['book_navigation'] = array(
'#markup' => drupal_render($book_navigation),
'#weight' => 100,
'#attached' => array(
'css' => array(
drupal_get_path('module', 'book') . '/css/book.theme.css',
),
),
);
}
}
if ($view_mode != 'rss') {
book_node_view_link($node, $view_mode);
}
}