public ActionResult Index(string year, string month, int?page = 1)
{
#region 檢核傳入參數, 並依傳入參數的狀況, 呼叫不同的 Service Method 作查詢
int intYear = 0;
int intMonth = 0;
IEnumerable <BillingItemViewModel> bills = null;
//如果 year 與 month 都有值, 那就傳 year / month 的參數作查詢
//否則, 就查全部
if (year != null && month != null)
{
//如果2者都不是, 那就呼叫服務層作查詢
if (int.TryParse(year, out intYear) && int.TryParse(month, out intMonth))
{
bills = _billingSvc.GetByQueryYM(intYear, intMonth);
}
else
{
bills = new List <BillingItemViewModel>(); //回傳一個空物件
}
}
else
{
bills = _billingSvc.GetAll();
}
#endregion
#region 進行分頁
int pageNumber = (!page.HasValue ? 1 : (page.Value < 1 ? 1 : page.Value));
var onePage = bills.ToPagedList(pageNumber, pageSize);
#endregion
#region 將結果回傳
return(View(onePage));
#endregion
}
public ActionResult CreateWithAjax(BillingItemViewModel item, int?page)
{
//定位在當初輸入資料的那個值
//不論 ModelState 是否為 Valid, 都要執行, 不然萬一 Model 驗證失敗, 就沒有 SelectList 可以用, 會造成例外 ...
ViewBag.BillTypes = new SelectList(GlobalCodeMappings.BillTypes, "Key", "Value", item.BillType);
Thread.Sleep(3 * 1000); //暫停一下, 看效果
#region Model 檢查
if (!ModelState.IsValid)
{
//參考 https://gist.github.com/jpoehls/2230255 取得錯誤的作法
var errors = ModelState
.Where(x => x.Value.Errors.Count > 0)
.Select(d => new AjaxErrorViewModel
{
ClientId = d.Key,
ErrorMessage = d.Value.Errors.FirstOrDefault().ErrorMessage
});
Response.StatusCode = (int)HttpStatusCode.BadRequest;
return(Json(errors));
#region 參考 91 老師的實作方式
//var errorFields = ModelState.Where(d => d.Value.Errors.Any())
// .Select(x => new { x.Key, x.Value.Errors });
//var errors = new List<AjaxErrorViewModel>();
//foreach (var err in errorFields)
//{
// errors.Add(err.Errors.Select(
// d => new AjaxErrorViewModel()
// {
// ClientId = err.Key,
// ErrorMessage = d.ErrorMessage
// }).FirstOrDefault());
//}
//Response.StatusCode = (int)HttpStatusCode.BadRequest;
//return Json(errors);
#endregion
#region 最原始的作法
////不知應該如何處理錯誤訊息 (in AJAX Helper) ...
////有試過 return View("Create", item); 但發現畫面會亂掉
////
//List<string> errors = new List<string>();
//foreach (ModelState err in ModelState.Values)
//{
// foreach (ModelError errmsg in err.Errors)
// {
// errors.Add(errmsg.ErrorMessage);
// }
//}
////以下參考 ...
////http://stackoverflow.com/questions/18763993/send-exception-message-in-ajax-beginform-mvc-4-scenario
//Response.StatusCode = (int)System.Net.HttpStatusCode.BadRequest; //強迫前端執行 OnFailure ...
//return Json(errors);
#endregion
}
#endregion
#region 呼叫服務層
//呼叫 Service 層提供的功能
item.Id = Guid.NewGuid();
_billingSvc.Add(item);
#endregion
#region 分頁處理
int pageNumber = (!page.HasValue ? 1 : (page.Value < 1 ? 1 : page.Value));
var bills = _billingSvc.GetAll();
var onePage = bills.ToPagedList(pageNumber, pageSize);
#endregion
#region 回傳結果
return(PartialView("ListCurrent", onePage));
//return PartialView("ListCurrent", bills);
#endregion
}
public ActionResult Index()
{
var data = billingService.GetAll();
return(View(data));
}