Gridview 函数 yii2 中的访问变量

是实际开发中，有这么一个场景，Gridview 怎么访问外部变量，

use在value可调用函数中的函数签名后插入：

[
                            'header' => "操作",
                            'class' => 'yii\grid\ActionColumn',
                            'template'=> '{ajax-edit}',
                            'buttons' => [
                                'ajax-edit' => function ($url, $model, $key) use($package){
                                    return Html::a('关联项目', ['ajax-generate-add', 'id' => $model->id,'package_id' => $package->id], [
                                            'class' => 'orange',
                                            'data-toggle' => 'modal',
                                            'data-target' => '#ajaxModal',
                                        ]) . '<br>';
                                },
                            ],
                        ]