I'm working with Yii 2, and it's grid view to show information.
Now, my problem is that whenever a user scans two identical serial numbers and/or mac addresses, it should highlight the row (change color to red), and show some error sign or whatever.
Screenshot: 
What I want it to look like:
I'm new to Yii2 and don't exactly know how they do it with the grid view. I've been researching on this specific problem but couldn't find anything.
Code for Gridview
<?= GridView::widget([ 'id' => 'scan-batch-grid', 'dataProvider' => $dataProvider, 'columns' => [ ['class' => 'yii\grid\SerialColumn'], ['class' => 'yii\grid\CheckboxColumn'], [ 'attribute' => 'product_ID', 'value' => 'product.name' ], 'SN', 'MAC', [ 'class' => 'yii\grid\ActionColumn', 'urlCreator' => function ($action, $model, $key, $index) { return Url::to(['scan-batch/view', 'id' => $key, 'scan' => $model->scan_batch_ID]); }, 'buttons' => [ 'update' => function ($url, $model, $key) { return ''; }, 'delete' => function ($url, $model, $key) { return ''; }, ], ], ], ]); ?> EDIT
I only want to know how to change the color of only one row.
