/**
* Set the required form fields for this courier, taking those
* defined in Courier in to account.
*/
public static function getCMSValidator()
{
//Get required fields from Courier DataObject.
$parent_required = is_array(parent::getCMSValidator()) ? parent::getCMSValidator() : array();
//Specify our own required fields.
$required = array("FlatRate");
//Return the required fields.
return RequiredFields::create(array_merge($parent_required, $required));
}
