/** * 根据查找指定的slider * @param int $id 主要查找的slider的id * @return ShopSlider * @throws DeepInException */ protected function find($id) { $slider = ShopSlider::find($id); if ($slider instanceof ShopSlider) { return $slider; } throw new DeepInException("找不到id为" . $id . "的数据~!"); }