/**
* Get the models primary key.
*
* @return mixed
*/
public function getId()
{
if (null === $this->_primaryTableRow) {
return null;
}
$tableInfo = $this->_primaryTableRow->getTable()->info();
$result = array();
foreach ($tableInfo['primary'] as $primary_key) {
$result[] = $this->_primaryTableRow->{$primary_key};
}
if (count($result) > 1) {
return $result;
} else {
if (count($result) === 1) {
return $result[0];
} else {
return null;
}
}
}
