在 http 发布 MVC 4 后未显示模型错误
本文关键字：显示 模型 错误 http 发布 MVC | 更新日期: 2023-09-27 18:33:42
我正在验证日期输入服务器端，并在用户输入无效时添加ModelError。以下是我的代码
public ActionResult EditOffer()
{
var offerID = Convert.ToInt64(Request.RequestContext.RouteData.Values["id"]);
using (joyryde_storeEntities context = new joyryde_storeEntities())
{
var objOffer = context.tbl_offer.Where(x => x.LNG_OFFER_ID == offerID).FirstOrDefault();
ViewBag.OfferID = offerID;
ViewBag.Header = "Edit " + objOffer.TXT_OFFER_TITLE;
ViewBag.ActionToPerform = "Edit";
if (System.IO.File.Exists(Server.MapPath(string.Format("~/assets/images/Stores/{0}/O_{1}_Small.jpg", Session["StoreID"], offerID))))
{
objOffer.TXT_OFFER_SMALL_PATH = string.Format("~/assets/images/Stores/{0}/O_{1}_Small.jpg", Session["StoreID"], offerID);
}
return View("AddOffer", objOffer);
}
}
[HttpPost]
public ActionResult EditOffer(tbl_offer modal, string Add, string Edit)
{
if (ModelState.IsValid)
{
using (joyryde_storeEntities context = new joyryde_storeEntities())
{
var offerID = Convert.ToInt64(Request.RequestContext.RouteData.Values["id"]);
if (!isOfferExist(modal.DAT_START_OFFER.Value.Date, modal.DAT_END_OFFER.Value.Date.AddHours(23).AddMinutes(59).AddSeconds(59).AddMilliseconds(999), Convert.ToInt64(Session["StoreID"]), offerID, Add, Edit, context))
{
// My Code
return RedirectToAction("AllOffers", "Store");
}
else
{
ModelState.AddModelError("DAT_START_OFFER", "Date Not Available"); // Here i am adding Modal Error For Date
if (Edit != null)
{
return RedirectToAction("EditOffer");
}
else
{
return RedirectToAction("AddOffer");
}
}
}
}
else
{
return RedirectToAction("EditOffer");
}
视图
<div class="panel-body container-fluid">
@using (Html.BeginForm("EditOffer", "Store", FormMethod.Post, new { @class = "form-horizontal", enctype = "multipart/form-data" , id="offerForm"}))
{
@Html.AntiForgeryToken();
@Html.ValidationSummary(true);
<div class="form-group">
<label class="col-sm-3 control-label">Offer Title</label>
<div class="col-sm-6">
@Html.TextBoxFor(model => model.TXT_OFFER_TITLE, new { @class = "form-control", placeholder = "Offer Title", autocomplete = "off", name = "title" })
@Html.ValidationMessageFor(model => model.TXT_OFFER_TITLE, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">Offer Banner</label>
<div class="col-sm-9">
<div class="image-container" style=" border: 1px solid #ccc; display: table;position:relative">
<a href="#editimage" data-toggle="modal" class="btn btn-sm btn-icon btn-inverse btn-round btn-image-edit" data-toggle="tooltip" data-original-title="Edit">
<i class="icon wb-pencil" aria-hidden="true"></i>
</a>
<div class="img-preview preview-lg">
<img id="image_upload_preview" src="@Url.Content(string.Format("~/assets/images/Stores/{0}/O_{1}_Small.jpg", Session["StoreID"], ViewBag.OfferID))" style="width:100%" alt="your image" />
</div>
</div>
<div class="input-group-file" style="margin-top:5px">
@Html.TextBoxFor(modal => modal.TXT_OFFER_SMALL_PATH, new { @class = "hide", @readonly = "true", width = "0", id = "filePath" })
@Html.ValidationMessageFor(modal => modal.TXT_OFFER_SMALL_PATH, "", new { @class = "text-danger" })
<span class="">
<span class="btn btn-success btn-small btn-file">
Upload Image <i class="icon wb-upload" aria-hidden="true"></i>
<input type="file" name="files" accept="image/*" multiple="" id="fileupload" onchange="showimagepreview(this)">
</span>
</span>
</div>
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">Offer Detail </label>
<div class="col-sm-6">
@Html.TextAreaFor(model => model.TXT_OFFER_TEXT, new { @class = "form-control", placeholder = "Offer Text", autocomplete = "off", name = "text" })
@Html.ValidationMessageFor(model => model.TXT_OFFER_TEXT, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">Valid For</label>
<div class="col-sm-4">
<div class="input-daterange" data-plugin="datepicker">
<div class="input-group">
<span class="input-group-addon">
<i class="icon wb-calendar" aria-hidden="true"></i>
</span>
@Html.TextBoxFor(model => model.DAT_START_OFFER, "{0:dd MMMM yyyy}", new { @class = "form-control from_date", placeholder = "Start Date", autocomplete = "off", name = "start" })
@Html.ValidationMessageFor(model => model.DAT_START_OFFER, "", new { @class = "text-danger" })
</div>
<div class="input-group">
<span class="input-group-addon">to</span>
@Html.TextBoxFor(model => model.DAT_END_OFFER, "{0:dd MMMM yyyy}", new { @class = "form-control to_date", placeholder = "End Date", autocomplete = "off", name = "end" })
@Html.ValidationMessageFor(model => model.DAT_END_OFFER, "", new { @class = "text-danger" })
</div>
</div>
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">Is Premium</label>
<div class="col-sm-4">
<div class="radio-custom radio-default radio-inline">
@Html.RadioButtonFor(model => model.INT_IS_PRIME, 1, new { @id = "ispremiumYes", name = "ispremium", @checked = "checked" })
<label for="ispremiumYes">Yes</label>
</div>
<div class="radio-custom radio-default radio-inline">
@Html.RadioButtonFor(model => model.INT_IS_PRIME, 0, new { @id = "ispremiumNo", name = "ispremium", })
<label for="ispremiumNo">No</label>
</div>
</div>
</div>
<div class="form-group">
<div class="col-sm-6 col-sm-offset-3">
<button type="submit" name="@ViewBag.ActionToPerform" class="btn btn-primary">Submit </button>
<button type="reset" class="btn btn-default btn-outline">Reset</button>
</div>
</div>
@Html.Hidden("cropWidth", new { id = "cropWidth" })
@Html.Hidden("cropHeight", new { id = "cropHeight" })
@Html.Hidden("cropPointX", new { id = "cropPointX" })
@Html.Hidden("cropPointY", new { id = "cropPointY" })
@Html.Hidden("ImgSrc", new { id = "ImgSrc" })
}
<div class="modal fade" id="editimage" aria-labelledby="modalLabel" role="dialog" tabindex="-1">
<div class="modal-dialog" role="document" style="width:1024px;height:768px">
<div class="modal-content ">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="modalLabel">Crop the image</h4>
</div>
<div class="modal-body">
<div class="row">
<div class="col-sm-9">
<div class="cropper text-center">
<img id="image" src="@Url.Content(string.Format("~/assets/images/Stores/{0}/O_{1}_Small.jpg", Session["StoreID"], ViewBag.OfferID))" style="max-width:730px;" alt="Picture">
</div>
</div>
<div class="col-sm-3">
<div class="docs-preview clearfix">
<div class="img-preview preview-lg"></div>
</div>
</div>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
但是模态误差没有显示在视图中。可能是什么原因？
当您设置模型错误时，请使用 RedirectToAction，这意味着您加载新页面，签入调试，然后您的代码返回到 GET 方法并重新加载所有内容。您必须返回带有模型的视图。
ModelState.AddModelError("DAT_START_OFFER", "Date Not Available");
if (Edit != null)
{
return View(modal); //if your model is object named modal
}
由于
重定向到操作，您没有看到任何错误。您应该使用"查看"方法。例如，您可以只编写return EditOffer()
如果您
使用return RedirectToAction("EditOffer");则不会显示错误，它将重定向到public ActionResult EditOffer(){}操作方法，将显示[HttpGet]。
要纠正此错误，您应该使用View()方法。像return View();一样，它将错误返回到"发布的表单数据"页面。
[HttpPost]
public ActionResult EditOffer(tbl_offer modal, string Add, string Edit)
{
if (ModelState.IsValid)
{
using (joyryde_storeEntities context = new joyryde_storeEntities())
{
var offerID = Convert.ToInt64(Request.RequestContext.RouteData.Values["id"]);
if (!isOfferExist(modal.DAT_START_OFFER.Value.Date, modal.DAT_END_OFFER.Value.Date.AddHours(23).AddMinutes(59).AddSeconds(59).AddMilliseconds(999), Convert.ToInt64(Session["StoreID"]), offerID, Add, Edit, context))
{
// My Code
return RedirectToAction("AllOffers", "Store");
}
else
{
ModelState.AddModelError("DAT_START_OFFER", "Date Not Available"); // Here i am adding Modal Error For Date
if (Edit != null)
{
return View(modal);
}
else
{
return RedirectToAction("AddOffer");
}
}
}
}
else
{
ViewBag.OfferID = Here give the office id;
ViewBag.Header = "Edit " + objOffer.TXT_OFFER_TITLE;
ViewBag.ActionToPerform = "Edit";
ModelState.AddModelError("","Your Error Message"); // Here i am adding Modal Error For Date
return View(modal);
}
}