Сниппет для вывода ресурсов по TV полю, где TV поля - SELECT поле

Код сниппета:

<?php
$searchCaption = trim($modx->getOption('author', $scriptProperties, ''));
$tpl           = $modx->getOption('tpl', $scriptProperties, 'item');
$limit         = (int)$modx->getOption('limit', $scriptProperties, 12);
$parents       = $modx->getOption('parents', $scriptProperties, 1453);
$sortby        = $modx->getOption('sortby', $scriptProperties, 'publishedon');
$sortdir       = $modx->getOption('sortdir', $scriptProperties, 'DESC');

if (empty($searchCaption)) {
    return 'Автор не указан';
}

$tv = $modx->getObject('modTemplateVar', ['name' => 'artAuthor']);
if (!$tv) {
    return 'TV artAuthor не найдена';
}

$tvId = $tv->get('id');

$optionsString = $modx->runSnippet('authorIDs');

$tvValue = null;

if (!empty($optionsString)) {
    $pairs = explode('||', trim($optionsString));
    
    foreach ($pairs as $pair) {
        $pair = trim($pair);
        if (empty($pair)) continue;

        if (strpos($pair, '==') !== false) {
            list($caption, $value) = array_map('trim', explode('==', $pair, 2));
            
            if ($caption === $searchCaption) {
                $tvValue = $value;
                break;
            }
        }
    }
}

$pdoParams = [
    'parents'         => $parents,
    'includeTVs'      => 'artAuthor',
    'where'           => json_encode([
        'TVartauthor.tmplvarid' => $tvId,
        'TVartauthor.value'     => $tvValue
    ]),
    'join'            => '[{"alias":"TVartauthor","left":false,"table":"modTemplateVarResource","on":"TVartauthor.contentid = modResource.id AND TVartauthor.tmplvarid = '.$tvId.'"}]',
    
    'sortby'          => $sortby,
    'sortdir'         => $sortdir,
    'limit'           => $limit,
    'tpl'             => $tpl,
    'showUnpublished' => 1,
    'showDeleted'     => 0,
    'pageVarKey'      => 'page',
    // 'showLog'      => 1,
];

$output = $modx->runSnippet('pdoPage', $pdoParams);

return $output ?: 'no';