How to make several checklists in one task?

Question

Bitrix24

<?php
require($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/prolog_before.php");
CModule::IncludeModule("tasks");

    $arFields = Array(
        "TITLE" => "Task title",
        "DESCRIPTION" => "Task description",
        "RESPONSIBLE_ID" => 721,
    );

    $obTask = new CTasks;
    $ID = $obTask->Add($arFields);
    $success = ($ID>0);

    if($success)
    {
        echo "Ok";
        $task = \CTaskItem::getInstance($ID, 721);
        \CTaskCheckListItem::add($task, ['TITLE'=>'First item', 'SORT_INDEX'=>10, 'IS_COMPLETE'=>'N']);
       
    }
    else
    {
        if($e = $APPLICATION->GetException())
            echo "Error: ".$e->GetString();
}?>

the task is created with a checklist, but how to make several checklists?

Answer 1

Change your checklist creation code, you can use the snippet:

use \Bitrix\Main,
  \Bitrix\Tasks\CheckList\Task
  ;

Main\Loader::IncludeModule('tasks');

/**
 * @var integer Идентификатор задачи
 */
$taskId = 6;

/**
 * @var integer Идентификатор пользователя
 */
$userId = 1;

$result = Task\TaskCheckListFacade::add(
  $taskId,
  $userId,
  [
    'TITLE'        => 'Test data',
    'PARENT_ID'    => 0,
    'SORT_INDEX'   => '10',
    'IS_COMPLETE'  => 'N',
    'IS_IMPORTANT' => 'N',
    'MEMBERS'      => [],
    'ATTACHMENTS'  => [],
  ]
);

var_dump($result);

Answer 2

//First, we create the actual checklist (wrapper) with 'PARENT_ID' (so, we can create several such "wrappers") :
$result = TaskCheckListFacade::add(
$taskID,
$userID,
[
'TITLE' => $ checkList['TITLE'],
'PARENT_ID' => 0,
'SORT_INDEX' => $checkList['SORT_INDEX'],
'IS_COMPLETE' => $checkList['IS_COMPLETE'],
'IS_IMPORTANT' => $checkList['IS_IMPORTANT '],
]
);
//Then add items to it, specifying $result->getData()['ITEM']->getFields()['ID'] for them as 'PARENT_ID'
$item = TaskCheckListFacade::add(
$taskID,
$ userID,
[
'TITLE' => $listItem['TITLE'],
'PARENT_ID' => $result->getData()['ITEM']->getFields()['ID'],
'SORT_INDEX' => $ listItem['SORT_INDEX'],
'IS_COMPLETE' => $listItem['IS_COMPLETE'],
'IS_IMPORTANT' => $listItem['IS_IMPORTANT'],
]
);