public function relations()
{
return array('values' => array(self::HAS_MANY, 'OEModule\\OphCiExamination\\models\\OphCiExamination_VisualAcuityUnitValue', 'unit_id', 'order' => 'base_value DESC'), 'selectableValues' => array(self::HAS_MANY, 'OEModule\\OphCiExamination\\models\\OphCiExamination_VisualAcuityUnitValue', 'unit_id', 'on' => 'selectableValues.selectable = true', 'order' => 'base_value DESC'));
}