foreach ($vars as $weight => $value) {
$this->_vars[$weight] = [
'name' => CRM_Utils_Type::validate($value['sort'], 'MysqlColumnNameOrAlias'),
- 'direction' => CRM_Utils_Array::value('direction', $value),
+ 'direction' => $value['direction'] ?? NULL,
'title' => $value['name'],
];
}