<?php
use thread\app\bootstrap\ActiveForm;
//
use \backend\modules\location\models\Country;

/**
 * @var $model \backend\modules\location\models\City
 * @var $modelLang \backend\modules\location\models\CityLang
 */

$form = ActiveForm::begin();
//
echo
    $form->submit($model, $this)
    . $form->text_line($model, 'alias')
    . $form->text_line_lang($modelLang, 'title')
    . $form->field($model, 'country_id')->selectOne(Country::dropDownList())
    . $form->switcher($model, 'published')
    . $form->submit($model, $this);
//
ActiveForm::end();