$actions[] = Html::button(Html::tag('span', '', ['class' => 'glyphicon glyphicon-eye-' . ($category->visible ? 'open' : 'close')]), ['class' => 'btn btn-xs text-muted', 'data-toggle' => 'tooltip', 'data-placement' => 'top', 'title' => $category->visible ? Yii::t('podium/view', 'Category visible for guests') : Yii::t('podium/view', 'Category hidden for guests')]);