/**
* Adds a topic.
*
* @param Topic $topic
*
* @return void
*/
public function addTopic(Topic $topic)
{
if ($this->lastTopic === NULL || $this->lastTopic->getTimestamp() <= $topic->getTimestamp()) {
$this->setLastTopic($topic);
}
$topicLastPost = $topic->getLastPost();
if ($topicLastPost !== NULL && ($this->lastPost === NULL || $this->lastPost->getTimestamp() <= $topicLastPost->getTimestamp())) {
$this->setLastPost($topic->getLastPost());
}
$this->_increaseTopicCount(+1);
// topic will increase postCount itself when adding the initial post to it
$topic->setForum($this);
$this->topics->attach($topic);
}
