public async Task <IHttpActionResult> PutPurchase(Guid id, Purchase purchase) { if (!ModelState.IsValid) { return(BadRequest(ModelState)); } if (id != purchase.Id) { return(BadRequest()); } purchase.Id = id; try { await _purchaseRepository.EditAsync(purchase); } catch (DbUpdateConcurrencyException) { if (!PurchaseExist(id)) { return(NotFound()); } else { throw; } } return(StatusCode(HttpStatusCode.NoContent)); }