public function getCity()
{
return $this->hasOne(Cities::className(), ['city_id' => 'city_id']);
}
public function actionCities()
{
$country_id = (int) \Yii::$app->request->getQueryParam('country_id');
if ($country_id) {
$cities = Cities::find()->where(['country_id' => $country_id])->all();
} else {
$cities = Cities::find()->all();
}
$result = [];
if ($cities) {
/** @var Cities $city */
foreach ($cities as $city) {
$result[] = ArrayHelper::toArray($city);
}
}
return json_encode($result);
}