public function index()
{
$id = $this->request->param('id');
$data = (new Article())->where(['id'=>$id,'status'=>['>',0]])->find();
if($data['images'] != ''){
$data['images'] = explode(',',$data['images']);
}
$data['size_list'] = [];
if($data['size'] != ''){
$data['size_list'] = (new Filtrate())->where(['id'=>['in',$data['size']]])->select();
}
$data['color_list'] = [];
if($data['color'] != ''){
$data['color_list'] = (new Filtrate())->where(['id'=>['in',$data['color']]])->select();
}
$nowNav = (new Category())->field('id,pid,name,english,nav,info_state,info_model,article_model,pic')->with(['category_list'=>function($query){
$query->order('sortnum desc,id desc');