자답.

확장 변수의 EID명으로는 date를 사용.

{@

$args->module_srl = $module_info->module_srl;

$args->category_srl = '';

$args->search_target = $search_target;

$args->search_keyword = $search_keyword;

$oDocumentModel = &getModel('document');

$output = $oDocumentModel->getDocumentList($args, $noticeTF);

Context::set('total_count', $output->total_count);

$args->list_count = $total_count;

$document_list = $oDocumentModel->getDocumentList($args, $noticeTF)->data;

}

<!--@foreach($document_list as $no => $document)-->

{@ $extra_var[$no] = $document->getExtraEidValue('date'); }

<!--@end-->

{@

array_multisort($extra_var, $document_list);

$document_list = array_slice($document_list, $module_info->list_count * ($page-1), $module_info->list_count);

}