function _generateId()
{
// Override the standard implementation, since you can have multiple
// check-boxes with the same name on a form. Therefore, add the
// (cleaned up) value to the id.
if ($this->getAttribute('id')) {
return;
}
parent::_generateId();
$id = $this->getAttribute('id') . '_' . clean_param($this->getValue(), PARAM_ALPHANUMEXT);
$this->updateAttributes(array('id' => $id));
}
