public function getParentRow($rule)
{
$ref = $this->_model->getReference($rule);
if ($ref === Kwf_Model_RowsSubModel_Interface::SUBMODEL_PARENT) {
if (!$this instanceof Kwf_Model_RowsSubModel_Row_Interface) {
throw new Kwf_Exception("row '" . get_class($this) . "' must implement Kwf_Model_RowsSubModel_Row_Interface");
}
return $this->getSubModelParentRow();
}
if (!isset($ref['column'])) {
throw new Kwf_Exception("column for reference '{$rule}' not set");
}
$id = $this->{$ref['column']};
if (!$id) {
return null;
}
if (isset($ref['refModelClass'])) {
$refModel = Kwf_Model_Abstract::getInstance($ref['refModelClass']);
} else {
if (isset($ref['refModel'])) {
$refModel = $ref['refModel'];
} else {
throw new Kwf_Exception("refModel or refModelClass for reference '{$rule}' not set");
}
}
return $refModel->getRow($id);
}
