public function createAction()
{
$resp = new Response();
$request = $this->app->request;
$post_id = $request->getPostParam('post_id');
$content = $request->getPostParam('content');
if ($post_id && $content) {
$comment = new Comment(array('post_id' => $post_id, 'content' => $content, 'user_id' => $this->app->user->getId()));
$comment->save();
}
$resp->redirectBack();
return $resp;
}