/** @inheritdoc */
 public static function displayForm($value, &$settings, $model)
 {
     $settings = static::settings($settings);
     $settings['options'] = array();
     $default_unit = $settings['default_unit'];
     $rounding = 1 / $settings['rounding'];
     $display_units = $settings['display_units'];
     if (empty($display_units)) {
         $display_units = array($default_unit);
     }
     for ($i = $settings['from']; $i <= $settings['to']; $i += $settings['step']) {
         $key = strval($i);
         // Force this to be treated as a string
         $val = '';
         foreach ($display_units as $num => $unit) {
             if ($unit == $default_unit) {
                 $val .= ($num > 0 ? ' / ' : '') . static::formatUnit($unit, $i, $rounding);
             } else {
                 $val .= ($num > 0 ? ' / ' : '') . static::formatUnit($unit, static::convertUnit($i, $default_unit, $unit), $rounding);
             }
         }
         $settings['options'][$key] = $val;
     }
     return parent::displayForm($value, $settings, $model);
 }
 /** @inheritdoc */
 public static function displayForm($value, &$settings, $model)
 {
     $name = \Arr::get($settings, 'config', $settings['mapping']['fieldName']);
     $settings['options'] = \Config::get($name, array());
     if (!is_array($settings['options'])) {
         $settings['options'] = array($settings['options']);
     }
     return parent::displayForm($value, $settings, $model);
 }