public function __invoke($post_id)
{
// 检查登录
$session = $this->getSession();
if (empty($session['user'])) {
$session->addFlash('error', '请先登录');
return new RedirectResponse($this->generateUrl('user_login'));
}
$user = UserModel::getUser($session['user']['id']);
// 检查帖子是否存在
$post = PostModel::getPost($post_id);
if (!$post) {
$session->addFlash('error', '帖子不存在');
return new RedirectResponse($this->getRequest()->server->get('HTTP_REFERER'));
}
// 检查主题
$thread = ThreadModel::getThread($post->threadId);
if (!$thread) {
$session->addFlash('error', '主题不存在');
return new RedirectResponse($this->generateUrl('forum_board', array('forum_id' => $post->forumId)));
}
$request = $this->getRequest();
if ($request->getMethod() == 'POST') {
$posts = $request->request;
$db = ForumDatabase::getInstance();
$db->transaction();
try {
$content = $posts->get('content');
$pictures = $posts->get('thumbnails');
if (!$pictures) {
$pictures = array();
} else {
$pictures = explode('<>', $pictures);
}
if (empty($content) && empty($pictures)) {
throw new \Exception("内容和图片不能都为空");
}
$reply = new PostModel();
$reply->threadId = $post->threadId;
$reply->forumId = $post->forumId;
$reply->replyPostId = $post->postId;
$reply->content = $content;
$reply->thumbnails = implode('<>', $pictures);
$reply->createTimestamp = time();
$reply->authorId = $user->id;
$reply->authorName = $user->username;
// 保存
PostModel::createPost($reply);
// 增加主题回复数
$thread->replies += 1;
ThreadModel::saveThread($thread);
$db->commit();
} catch (\Exception $e) {
$db->rollback();
$session->addFlash('error', $e->getMessage());
}
return new RedirectResponse($this->generateUrl('forum_thread_view', array('thread_id' => $post->threadId)));
}
return $this->render('post/reply.html.twig', array('post' => $post));
}
