Yii2 gridview row options

In Yii2 GridView, if you want to highlight or focus on certain row, you can use rowOptions attribute in your gridview.

Below are the example code.

<?=
GridView::widget([
    'dataProvider' => $dataProvider,
    'filterModel' => $searchModel,
      'rowOptions' => function ($model, $index, $widget, $grid) {

                            if ($model->is_read == 1) {
                                return ['class' => 'read'];
                            } else {
                                return [];
                            }
                         },
    'columns' => [
        ['class' => 'yii\grid\SerialColumn'],
         ['class' => 'yii\grid\ActionColumn']
    ],
]);
?>