Nette related

CREATE TABLE `topics` (
  `topic_id` int(11) NOT NULL,
  `topic_forum_id` int(11) NOT NULL,
  `topic_title` varchar(255) COLLATE utf8_czech_ci DEFAULT NULL,
  `topic_content` varchar(255) COLLATE utf8_czech_ci DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_czech_ci;

CREATE TABLE `replies` (
  `reply_id` int(11) NOT NULL,
  `reply_topic_id` int(11) NOT NULL,
  `replied_by` varchar(255) COLLATE utf8_czech_ci DEFAULT NULL,
  `reply_content` varchar(255) COLLATE utf8_czech_ci DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_czech_ci ROW_FORMAT=COMPACT;

ALTER TABLE `replies`
  ADD PRIMARY KEY (`reply_id`),
  ADD KEY `reply_topic_id` (`reply_topic_id`);

ALTER TABLE `replies`
  ADD CONSTRAINT `replies_ibfk_1` FOREIGN KEY (`reply_topic_id`) REFERENCES `topics` (`topic_id`);

public function renderViewtopicList($url, $page = 1, $items = 0)
{
    $topic = $this->forumManager->getTopic($url);
    $this->template->topic = $topic;
    $this->template->replies =  $this->forumManager->getRepliesTest($url, $topic);
}

public function getTopic($url)
{
         return $this->database->table(self::TOPICS_TABLE_NAME)->where(self::COLUMN_TOPIC_FORUMS_ID, $url)->get($url);
    
}
public function getRepliesTest($url, $topic)
 {
            return $topic->related(self::REPLIES_TABLE_NAME);
        
}

return $this->database->table(self::TOPICS_TABLE_NAME)->where(self::COLUMN_TOPIC_FORUMS_ID, $url)->get($url);

return $this->database->table(self::TOPICS_TABLE_NAME)->get($url);