AdminAction::newImg PHP Method

    public function newImg()
    {
        if ($_GET['post_id'] != '') {
            $imgs = M('weiba_post')->where('post_id=' . $_GET['post_id'])->find();
            //dump(M()->getLastSql());
            $this->assign('img', $imgs);
            //dump($imgs);exit;
        }
        if (IS_POST) {
            $img = M('weiba_post')->where('post_id=' . (int) $_POST['post_id'])->find();
            if ($_POST['img_1'] == '') {
                $this->error('请上传图片!');
            } else {
                $data['index_img'] = (int) $_POST['img_1'];
                $data['is_index'] = 1;
                $data['is_index_time'] = time();
                if ($img && $img['is_del'] != 1) {
                    $res = M('weiba_post')->where('post_id=' . $img['post_id'])->save($data);
                    //dump(M()->getLastSql());
                    //dump($res);exit;
                } else {
                    $this->error('该帖子已经删除!');
                }
                if ($res) {
                    $this->assign('jumpUrl', U('weiba/Admin/indexPost'));
                    $this->success('设置成功!');
                } else {
                    $this->error('设置失败!');
                }
            }
        } else {
            $this->display();
        }
    }