[ 'attribute' => 'slot_date' , 'value' => 'slot_date' , 'filter' => \yii\jui\DatePicker:: widget ([ 'language' => 'en' , 'dateFormat' => 'yyyy-MM-dd' , 'model' => $searchModel , 'attribute' => 'slot_date' , ] ), 'format' => 'html' , ],