DealExist::loadByDealId

static function loadByDealId($dealId)
{
	if ((int)($dealId) <= 0)
		return null;

	$fieldsRaw = DealRecurTable::getList([
		"filter" => array("=DEAL_ID" => $dealId),
		"limit" => 1
	]);
	if ($fields = $fieldsRaw->fetch())
	{
		$dealObject = new self($fields['ID']);
		$dealObject->initFields($fields);
		return $dealObject;
	}

	return null;
}