<?php use yii\helpers\Html; use app\models\Countries; use yii\widgets\Pjax; /* @var $id_country integer */ /* @var $state app\models\States */ /* @var $this \yii\web\View */ $countries = Countries::getList(); ?> <div class="row"> <div class="col-xs-5"> <?php echo Html::beginForm(['ajax/pjax'], 'get'); ?> <?php echo Html::label('Select country to edit states/regions', 'country'); ?> <?php echo Html::dropDownList('id_country', $id_country, $countries, ['prompt' => 'select country', 'id' => 'country', 'class' => 'form-control', 'onchange' => 'this.form.submit()']); ?> <?php echo Html::endForm(); ?> </div> <div class="col-xs-5 col-xs-offset-2">