protected function preFetchData(DataModel $controller, &$response)
{
$retriever = $controller->getRetriever();
$posts = $retriever->getPosts();
$response = $retriever->getLastResponse();
foreach ($posts as $key => $post) {
if (is_object($post) && ($author = $post->getAuthor()) && !in_array($author, $this->authors)) {
$this->authors[] = $author;
$controller->getUser($author);
}
}
}
