public static function getPrimaryKey(XenForo_DataWriter $dataWriter, $tableName = null)
{
$fields = $dataWriter->getFields();
if (!$tableName) {
$tables = array_keys($fields);
if (isset($tables[0])) {
$tableName = $tables[0];
} else {
return false;
}
}
$firstField = null;
foreach ($fields[$tableName] as $field => $fieldData) {
if ($firstField === null) {
$firstField = $field;
}
if (!empty($fieldData['autoIncrement'])) {
return $field;
}
}
return $firstField;
}
