'btn btn-success']) ?>

$dataProvider, 'filterModel' => $searchModel, 'columns' => [ ['class' => 'yii\grid\SerialColumn'], [ 'attribute' => 'questionnaire_id', 'filter' => Questionnaire::find()->select(['title', 'id'])->indexBy('id')->column(), 'value' => 'questionnaire.title' ], [ 'attribute' => 'user_id', 'filter' => User::find()->select(['username', 'id'])->indexBy('id')->column(), 'value' => 'user.username' ], 'score', [ 'attribute' => 'percent_correct_answers', 'value' => function($model) { $percent = $model->percent_correct_answers * 100; return $percent . '%'; } ], [ 'attribute' => 'status', 'format' => 'raw', 'filter' => StatusHelper::statusList(), 'value' => function ($model) { return StatusHelper::statusLabel($model->status); }, ], 'created_at', 'updated_at', ['class' => 'yii\grid\ActionColumn'], ], ]); ?>