php - How to add class in tbody and td of yii2 grid view?

Solution:

Try like that:

[
    'attribute' => 'attribute_name',
    'contentOptions' => ['class' => 'td-class'],
    'headerOptions' => ['class' => 'th-class']
],

Reference to the docs: https://www.yiiframework.com/doc/guide/2.0/en/output-data-widgets#column-classes

Solution:

Unfortunately it not possible to add any option in GridView to the body tag, but you could use it as a child of the table in your CSS file:

table.my-table tbody {
    ...
}

The options for the td tag as described in the anwser of @vvpanchev above.