SubjectId.php

См. документацию.

<?php
 
declare(strict_types=1);
 
namespace Bitrix\Socialnetwork\Control\Mapper\Default\Field;
 
use Bitrix\Socialnetwork\ValueObjectInterface;
use CSocNetGroupSubject;
 
class SubjectId implements ValueObjectInterface
{
    private static ?int $subjectId = null;
 
    public function getValue(): int
    {
        return $this->getDefaultSubjectId();
    }
 
    protected function getDefaultSubjectId(): int
    {
        if (static::$subjectId === null)
        {
            $subject = CSocNetGroupSubject::GetList(
                ["SORT"=>"ASC", "NAME" => "ASC"],
                ["SITE_ID" => SITE_ID],
                false,
                false,
                ["ID", "NAME"],
            )->fetch();
 
            static::$subjectId = (int)($subject['ID'] ?? 0);
        }
 
        return static::$subjectId;
    }
}