Yii2.0 Gridview使用外部变量

例子如下

			array(
				'attribute' => 'day_limit',
				'label'=>'当月销售',
				'value' => function ($model) use($saleDataAuth){
                    if($saleDataAuth){
                        return $model['device_summary']['mon1'] ? $model['device_summary']['mon1'] : '0';
                    }else{
                        return '0';
                    }
				},
				'format' => 'raw',
			),