Helper::getEventDescriptionById

static function getEventDescriptionById(?int $eventId): ?string
{
	if (!$eventId)
	{
		return null;
	}

	$event = EventTable::getList([
		'filter' => ['=ID' => $eventId,],
		'select' => ['DESCRIPTION'],
		'limit' => 1,
	])->fetch();

	return is_array($event)
		? $event['DESCRIPTION']
		: null
		;
}