$model->id], ['class' => 'btn btn-danger', 'data'=>['method'=>'post']]) ?>

$model, 'attributes' => [ 'id', 'level', 'category', [ 'attribute' => 'log_time', 'format' => 'datetime', 'value' => (int) $model->log_time ], 'prefix:ntext', [ 'attribute'=>'message', 'format'=>'raw', 'value'=>Html::tag('pre', $model->message, ['style'=>'white-space: pre-wrap']) ], ], ]) ?>