Implements hook_node_delete().
function book_node_delete($node) {
if (!empty($node->book['bid'])) {
if ($node->nid == $node->book['bid']) {
// Handle deletion of a top-level post.
$result = db_query("SELECT b.nid FROM {menu_links} ml INNER JOIN {book} b on b.mlid = ml.mlid WHERE ml.plid = :plid", array(
':plid' => $node->book['mlid'],
));
foreach ($result as $child) {
$child_node = node_load($child->nid);
$child_node->book['bid'] = $child_node->nid;
_book_update_outline($child_node);
}
}
menu_link_delete($node->book['mlid']);
db_delete('book')
->condition('mlid', $node->book['mlid'])
->execute();
drupal_static_reset('book_get_books');
}
}