modx snippet out tvs in category

tvsCategory.snippet.php

<?php
// v.1.0.2
// вывод тв полей из определенного раздела

$category = $modx->getOption('category', $scriptProperties, null);
$resourceId = $modx->getOption('resourceId', $scriptProperties, $modx->resource->id);
$limit = $modx->getOption('limit', $scriptProperties, 0);
$tvs = $modx->getOption('tvs', $scriptProperties, null);
$tpl = $modx->getOption('tpl', $scriptProperties, '');

$tpl = str_replace(array('{{', '}}', '^'), array('[[', ']]', '`'), $tpl);

$out = array();

$where = array();
$q = $modx->newQuery('modTemplateVarResource');
$alias = $q->getAlias();
$q->innerJoin('modTemplateVar', 'tv', "tv.id = {$alias}.tmplvarid");

$q->select(array(
    "{$alias}.id",
    "{$alias}.value as value",
    "tv.name as name",
    "tv.caption as caption",
));

if (!empty($resourceId))
{
    $where[] = "({$alias}.contentid = {$resourceId})";
}

if (!empty($category))
{
    $where[] = "(tv.category = {$category})";
}

if (!empty($tvs))
{
    $where[] = "(tv.id IN ({$tvs}))";
}

$q->where($where);
if ($limit > 0)
{
    $q->limit($limit);
}

$chunk = null;
if (preg_match('/^(@INLINE|@CODE)/i', $tpl))
{
    $tpl = preg_replace('/^(@INLINE|@CODE)/i', '', $tpl);
    $chunk = $modx->newObject('modChunk');
    $chunk->setCacheable(false);
    $chunk->set('snippet', $tpl);
}
else
{
    $chunk = $modx->getObject('modChunk', array('name' => $tpl));
}

$i = 0;
foreach ($modx->getIterator($alias, $q) as $object)
{
    $arr = $object->toArray();
    $arr['idx'] = $i;
    $out[] = $chunk->process($arr);
    $i++;
}

return implode("\n", $out);