public function append($id)
{
$topic = Topic::findOrFail($id);
$this->authorOrAdminPermissioinRequire($topic->user_id);
$markdown = new Markdown();
$content = $markdown->convertMarkdownToHtml(Input::get('content'));
$append = Append::create(['topic_id' => $topic->id, 'content' => $content]);
App::make('Phphub\\Notification\\Notifier')->newAppendNotify(Auth::user(), $topic, $append);
Flash::success(lang('Operation succeeded.'));
return Redirect::route('topics.show', $topic->id);
}
