How to change background of 1 row in Yii2 Gridview

Got it!

Yii2 : Adding Classes to Rows in the GridView (YouTube)

Yii2 Gridview row by row css expression

Simply add rowOptions to your gridview.

<?= GridView::widget([
    'id' => 'scan-batch-grid',
    'dataProvider' => $dataProvider,
    'rowOptions'=>function($model){
            if($a == $b){
                return ['class' => 'danger'];
            }
    },

Thanks for posting your answer Paramone. Worked great.

Here is my implementation:

    <?= GridView::widget([
    'dataProvider' => $dataProvider,
    'rowOptions' => function ($model) {
        if ($model->name == 'test') {
            return ['class' => 'info'];
        }
    },