/**
* 收藏或取消收藏
* @param $uid
* @return bool|string string为错误提示, bool为操作成功还是失败
*/
public function toggleFavorite($uid)
{
$params = ['uid' => $uid, 'target_id' => $this->id, 'target_type' => static::TYPE];
$favorite = Favorite::findOne($params);
$active = true;
if ($favorite) {
// 已经收藏了则取消收藏
$active = false;
$return = $favorite->delete() >= 0;
} else {
$favorite = new Favorite();
$favorite->setAttributes($params);
$return = $favorite->save() ?: array_values($favorite->getFirstErrors())[0];
}
if ($return == true) {
// 更新记数
$this->updateCounters(['favorite_count' => $active ? 1 : -1]);
}
return $return;
}
