====== YII2 form listBox ======

Model
<code php>
class Service extends \yii\db\ActiveRecord
{
    public function getDataItems()
    {
        return ArrayHelper::map(self::find()->all(), 'id', 'name');
    }
}
</code>

Views
<code php>
<?php $form = ActiveForm::begin(); ?>
<?= $form->field($model, 'service_id')->listBox($service->getDataItems(), ['maxlength' => 255]) ?>
<?php ActiveForm::end(); ?>
</code>