/**
  * Form behavior when input data
  * handling string input, insert it as new model
  *
  * @return array
  */
 public function behaviors()
 {
     return [['class' => CountryBehavior::className(), 'countryAttribute' => 'country_id'], ['class' => ProvinceBehavior::className(), 'countryAttribute' => 'country_id', 'provinceAttribute' => 'province_id'], ['class' => CityBehavior::className(), 'provinceAttribute' => 'province_id', 'cityAttribute' => 'city_id']];
 }
 /**
  * Form behavior when input data
  * handling string input, insert it as new model
  *
  * @return array
  */
 public function behaviors()
 {
     return [['class' => CountryBehavior::className(), 'countryAttribute' => 'country_id']];
 }