/**
  * @inheritdoc
  */
 public function rules()
 {
     return [[['name', 'type_id'], 'required'], [['id', 'type_id'], 'integer'], [['name', 'code'], 'string'], [['inputTimezone'], 'string'], [['inputCurrency'], 'integer'], [['inputCurrency'], function ($attribute, $params) {
         if (!is_null($this->{$attribute}) && empty(Currency::findOne($this->{$attribute}))) {
             $this->addError($attribute, Yii::t('geolocation', 'This currency does not exist.'));
         }
     }], [['listLocationIds'], function ($attribute, $params) {
         if (!empty($this->_listLocationIds)) {
             $count = self::find()->where(['id' => $this->_listLocationIds])->count();
             if (empty($count) || intval($count) != count($this->_listLocationIds)) {
                 $this->addError($attribute, Yii::t('geolocation', 'Some of these locations do not exist.'));
             }
         }
     }]];
 }