/**
* Alter the request object for the given fields using the given callback
*
* @param string[] $fieldList List of fields to work on
* @param callback $callback Function to run on the field
*/
protected function mergeRequest($fieldList, $callback)
{
$mergeArray = [];
foreach ($fieldList as $field) {
$mergeArray[$field] = $callback($field);
}
Request::merge($mergeArray);
}