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# Customizing Filter & List for UfCustomPriority

$ufFieldId = 'UF_CUSTOM_PRIORITY'; // Код UF-поля
$ufCustomPriority = \W4a\Tasks\TaskPriority::GetUfEnum($ufFieldId);
$priorityItems = [];
$priorityItemIDs = [];
foreach ($ufCustomPriority as $val)
{
    $priorityItems[$val['ID']] = $val['VALUE'];
    $priorityItemIDs[] = $val['ID'];
}

// Изменяем фильтр
$arResult['FILTER']['UF_CUSTOM_PRIORITY'] = array(
    'id' => 'UF_CUSTOM_PRIORITY',
    'name' => $arResult['FILTER']['UF_CUSTOM_PRIORITY']['name'],
    'type' => 'list',
    'items' => $priorityItems,
);
$arResultRows = [];
foreach ($arResult['ROWS'] as $row)
{
    $arResultRow = $row;

    $rowColumns = $row['columns'];
    $priorityItemId = $rowColumns['UF_CUSTOM_PRIORITY'];
    if(in_array($priorityItemId, $priorityItemIDs))
        $rowColumns['UF_CUSTOM_PRIORITY'] = $priorityItems[$priorityItemId];
    $arResultRow['columns'] = $rowColumns;
    $arResultRows[] = $arResultRow;
}
// Изменяем вывод в Гриде
$arResult['ROWS'] = $arResultRows;

namespace W4a\Tasks;

class TaskPriority
{
    public function GetUfEnum($ufFieldId){

        global $USER_FIELD_MANAGER;
        if(empty($ufFieldId))
            return false;

        $arFields = $USER_FIELD_MANAGER->GetUserFields("TASKS_TASK");

        $obEnum = new \CUserFieldEnum;
        $rsEnum = $obEnum->GetList(array('SORT'=>'ASC'),
            array(
                "USER_FIELD_ID" => $arFields[$ufFieldId]["ID"],
            )
        );
        $arResult = array();
        while($ar = $rsEnum->GetNext())
        {
            $arResult[] = $ar;
        }
        return $arResult;
    }
}

#
# Классы
#
$dir = '/local/classes/';
CModule::AddAutoloadClasses('', // не указываем имя модуля
   array(

      '\W4a\Tasks\TaskPriority' => $dir . 'Tasks/TaskPriority.php', // выставление приоритета
   )
);