render('_search', ['model' => $searchModel]); ?>

'btn btn-success']) ?> 'btn btn-success']) ?>

$dataProvider, 'filterModel' => $searchModel, 'columns' => [ ['class' => 'yii\grid\SerialColumn'], 'id', 'name', [ 'attribute' => 'category_id', 'value' => function ($model) { return $model->category ? $model->category->name : '-'; } ], ['class' => 'yii\grid\ActionColumn'], ], ]); ?>