How to output image in widget?

Hello,

When you wish to output an image in the index widget how do you do it please?

Currently I tried this but it does not work:




    <?= GridView::widget([

        'dataProvider' => $dataProvider,

        'filterModel' => $searchModel,

        'columns' => [

            ['class' => 'yii\grid\SerialColumn'],


            'id',

            'title',

            'posts:ntext',

            'keywords',

            'created_at:datetime',

            'updated_at:datetime',

           [

            'attribute' => 'categories_id',

            'label' => 'Categories',

            'value' => 'categories.name',

           ],

            'file',  <---------------------------------

            // 'categories_id',

            // 'user_id',


            ['class' => 'yii\grid\ActionColumn'],

        ],

    ]); ?>



Thank you,

Ben


[

                'class' => 'yii\grid\DataColumn',

	            'label'=>'file',

	            'format'=>'raw',

	            'value'=>$function($data){

		            return Html::img(['path/to/your/image/'. $data->file]);

	            }

        

            ],