get resources of all contexts with getResources snippet

$output = $modx->runSnippet('getResources',array(
	'parents' => '0',
	'limit' => '20',
   'tvFilters' => $field.'=='.$current_internationalkey  //'tvFilters' => 'internationalkey==ueber_uns'
));
return $output;

/* build query */

$carray=array(
    'deleted' => '0'
    ,'published' => '1'
    ,"`modResource`.`parent` IN (" . implode(',', $parents) . ")"
);

if ($context <>'all'){
$contextResourceTbl = $modx->getTableName('modContextResource');
$context = empty($context) ? $modx->quote($modx->context->get('key')) : $modx->quote($context);	
$carray[] = "(`modResource`.`context_key` = {$context} OR EXISTS(SELECT 1 FROM {$contextResourceTbl} `ctx` WHERE `ctx`.`resource` = `modResource`.`id` AND `ctx`.`context_key` = {$context}))";
}

$criteria = $modx->newQuery('modResource',$carray);
if (empty($showHidden)) {
    $criteria->andCondition(array('hidemenu' => '0'));
}

[[~[[+id]]]]

<?php
// Snippet: getContextDescription
$output = '';
if (!empty($context)) {
    $object = $modx->getObject('modContext', $context);
    if ($object) {
        $output = $object->get('description');
    }
}
return $output;
?>

[[getContextDescription? &context=`[[+context_key]]`]]