code: protected function ensureFieldIds()
      {
          if ($this->submitModelName) {
              $formName = Inflector::slug($this->submitModelName, '_');
          } else {
              $model = new \ReflectionClass($this->model);
              $formName = $model->getShortName();
          }
          $parts = [];
          preg_match_all('/{([^}]+)}/', $this->template, $parts);
          $keys = array_flip($parts[1]);
          $fieldIds = [];
          if (isset($keys['country'])) {
              $fieldIds['country'] = $formName . '_country_id';
          }
          if (isset($keys['state'])) {
              $fieldIds['state'] = $formName . '_state_id';
          }
          if (isset($keys['region'])) {
              $fieldIds['region'] = $formName . '_region_id';
          }
          if (isset($keys['city'])) {
              $fieldIds['city'] = $formName . '_city_id';
          }
          if (isset($keys['address'])) {
              $fieldIds['address'] = $formName . '_address';
          }
          if (isset($keys['postalCode'])) {
              $fieldIds['postal_code'] = $formName . '_postal_code';
          }
          if (isset($keys['geolocation'])) {
              $fieldIds['latitude'] = $formName . '_latitude';
              $fieldIds['longitude'] = $formName . '_longitude';
          }
          $this->fieldIds = $fieldIds;
      }
docs: Ensures the field ids names.