comment.php

См. документацию.

<?php
namespace Bitrix\Forum\Copy\Implement;
 
use Bitrix\Main\Copy\Container;
use Bitrix\Main\Copy\CopyImplementer;
use Bitrix\Main\Error;
use Bitrix\Main\Result;
 
class Comment extends CopyImplementer
{
    const COMMENT_COPY_ERROR = "COMMENT_COPY_ERROR";
 
    protected $ufEntityObject = "FORUM_MESSAGE";
    protected $ufDiskFileField = "UF_FORUM_MESSAGE_DOC";

    public function add(Container $container, array $fields)
    {
        $messageId = \CForumMessage::add($fields);
 
        if (!$messageId)
        {
            $this->result->addError(new Error("Error creating a new comment", self::COMMENT_COPY_ERROR));
        }
 
        return $messageId;
    }
 
    public function update($commentId, array $fields)
    {
        return \CForumMessage::update($commentId, $fields);
    }

    public function getFields(Container $container, $entityId)
    {
        $message = \CForumMessage::getByIDEx($entityId);
        return ($message ? $message : []);
    }

    public function prepareFieldsToCopy(Container $container, array $fields)
    {
        unset($fields["ID"]);
 
        if ($container->getParentId())
        {
            $fields["TOPIC_ID"] = $container->getParentId();
        }
 
        $dictionary = $container->getDictionary();
 
        if (!empty($dictionary["XML_ID"]))
        {
            $fields["XML_ID"] = $dictionary["XML_ID"];
        }
 
        return $fields;
    }

    public function copyChildren(Container $container, $entityId, $copiedEntityId)
    {
        $this->copyUfFields($entityId, $copiedEntityId, $this->ufEntityObject);
 
        return new Result();
    }

    public function updateAttachedIdsInText(int $id, array $attachedIds, callable $auxiliaryCallback): void
    {
        list($field, $text) = $this->getText($id);
 
        $detailText = call_user_func_array($auxiliaryCallback, [
            $text,
            $this->ufEntityObject,
            $id,
            $this->ufDiskFileField,
            $attachedIds
        ]);
 
        $this->update($id, [$field => $detailText]);
    }
 
    protected function getText($commentId)
    {
        $queryObject = \CForumMessage::getlist([], [
            "ID" => $commentId], false, 0, ["SELECT" => ["POST_MESSAGE"]]);
 
        if ($fields = $queryObject->fetch())
        {
            return ["POST_MESSAGE", $fields["POST_MESSAGE"]];
        }
        else
        {
            return ["POST_MESSAGE", ""];
        }
    }
}