thinkphp 的问题，求解求解？？

已进行详细辅导

public function category(){
$user = M('course_category');
$lists = $user->order('cate_order ASC')->select();

if(IS_POST) {
$cate = I("post.");
dump($cate);
dump($lists);
foreach($lists as $k => $v){
$order = I("post.cate_order_" . $v['cate_id']);
dump($order);
if($order)
$user->where(array("cate_id={$v['cate_id']}"))->setField("cate_order", $order);
dump($user->getlastSql());
}
die;
$this->success('修改成功');
}

$this->assign('lists', $lists);
$this->display();
}本回答被提问者采纳