CSocNetUserRelations::Update

static function Update($ID, $arFields)
{
	global $DB;

	if (!CSocNetGroup::__ValidateID($ID))
		return false;

	$ID = intval($ID);

	$arFields1 = BitrixSocialnetworkUtil::getEqualityFields($arFields);

	if (!CSocNetUserRelations::CheckFields("UPDATE", $arFields, $ID))
		return false;

	$db_events = GetModuleEvents("socialnetwork", "OnBeforeSocNetUserRelationsUpdate");
	while ($arEvent = $db_events->Fetch())
		if (ExecuteModuleEventEx($arEvent, array($ID, $arFields))===false)
			return false;

	$arUserRelationOld = CSocNetUserRelations::GetByID($ID);

	$strUpdate = $DB->PrepareUpdate("b_sonet_user_relations", $arFields);
	BitrixSocialnetworkUtil::processEqualityFieldsToUpdate($arFields1, $strUpdate);

	if ($strUpdate <> '')
	{
		$strSql =
			"UPDATE b_sonet_user_relations SET ".
			"	".$strUpdate." ".
			"WHERE ID = ".$ID." ";
		$DB->Query($strSql, False, "File: ".__FILE__."
Line: ".__LINE__);

		$events = GetModuleEvents("socialnetwork", "OnSocNetUserRelationsUpdate");
		while ($arEvent = $events->Fetch())
			ExecuteModuleEventEx($arEvent, array($ID, $arFields));

		if (
			(!array_key_exists("SEND_MAIL", $arFields)
			|| $arFields["SEND_MAIL"] != "N")
			&& !IsModuleInstalled("im")
		)
		{
			$mailType = "";
			if ($arUserRelationOld["RELATION"] != SONET_RELATIONS_FRIEND && $arFields["RELATION"] == SONET_RELATIONS_FRIEND)
				$mailType = "AGREE_FRIEND";
			elseif ($arUserRelationOld["RELATION"] != SONET_RELATIONS_BAN && $arFields["RELATION"] == SONET_RELATIONS_BAN)
				$mailType = "BAN_FRIEND";
			elseif ($arUserRelationOld["RELATION"] != SONET_RELATIONS_REQUEST && $arFields["RELATION"] == SONET_RELATIONS_REQUEST)
				$mailType = "INVITE_FRIEND";

			if ($mailType <> '')
				CSocNetUserRelations::SendEvent($ID, $mailType);
		}

		CSocNetSearch::OnUserRelationsChange($arUserRelationOld["FIRST_USER_ID"]);
		CSocNetSearch::OnUserRelationsChange($arUserRelationOld["SECOND_USER_ID"]);
	}
	else
		$ID = False;

	return $ID;
}