public ActionResult Edit(SettlementReg model)
        {
            SettlementRegTambahanBiaya[] res = JsonConvert.DeserializeObject <SettlementRegTambahanBiaya[]>(model.StrBiayaTambahan);
            model.ListBiayaTambahan = res.ToList();

            if (ModelState.IsValid)
            {
                Context.SettlementReguler dbitem = RepoSettlementReg.FindByPK(model.Id);
                model.SetDb(dbitem);
                RepoSettlementReg.save(dbitem, UserPrincipal.id);
                RepoAuditrail.saveDelAllSettlementRegulerBiayaTambahanQuery(dbitem, UserPrincipal.id);
                foreach (Context.SettlementRegulerTambahanBiaya srtb in dbitem.SettlementRegulerTambahanBiaya)
                {
                    RepoAuditrail.saveSettlementRegulerBiayaTambahanQuery(srtb, UserPrincipal.id);
                }

                return(RedirectToAction("Index"));
            }

            return(View("Form", model));
        }