我一定是想念一些傻瓜,但这就是问题所在.
我在Transactions控制器上有一个Create动作. Create.cshtml使用jQuery通过调用$.ajax将表单发布到服务器.调试显示所有内容都按预期到达服务器.我使用表单数据来更新记录：这也可以正常工作.然后我返回一个局部视图,将模型传递给具有默认数据的视图.我可以调试并验证模型是否传递空值和0,即我的模型的默认数据.
问题是,在响应中发送回浏览器的是旧数据……！
我没有理由看到原因.希望你能……
注意：我没有使用任何形式的输出缓存.
编辑1：
缓存不会在浏览器中发生.我说的原因是我可以在Firebug中看到对AjaxCreate Action的调用的响应.我也可以在Fiddler中看到这一点.
编辑2：
如果查看部分视图的代码,您会看到每个下拉列表或文本框的值都是@ Model.Transaction.[Property]打印在它旁边.奇怪的是,这显示了正确的值,即我的Transaction对象的默认值,但是下拉列表和文本框坚持使用发布到服务器的值,而不是每个应该呈现的属性的默认值.
编辑3：
我已经包含了下面的图像,因此您可以看到正在传入的每个控件右侧打印的值.然而,控件反映了在之前的$.ajax调用中发布到服务器的旧数据. (注释显示创建视图模型时的日期时间,这样我可以看到更新的内容).
编辑4：
我发现用@ Html.TextBox助手替换@ Html.EditorFor(…)(参见下面的视图代码)可以解决问题.所以,似乎正在发生的事情是EditorFor助手正在引发问题.为什么？我不知道,但会发布另一个更具体的问题.
代码和标记如下：
jQuery的：
$(document).ready(function () {
$('input[name="nextRecord"]').live('click',function () {
var theForm = $(this).closest('form');
if ((theForm).valid()) {
var buttonText = $(this).val();
var action = "/input/Transactions/AjaxCreate/";
if (buttonText === "Reset") {
clearForm(theForm);
}
else {
var targetElement = $('#CreateDiv');
var _data = theForm.serialize() + '&nextRecord=' + $(this).val();
$.ajax({
url: action,data: _data,cache: 'false',type: 'POST',dataType: 'html',success: function (html) {
$(targetElement).html(html);
createDatePickers(targetElement);
jQuery.validator.unobtrusive.parse(targetElement);
}
});
}
}
return false;
});
});
局部视图：
@model FlatAdmin.Domain.ViewModels.TransactionViewModel
@* This partial view defines form fields that will appear when creating and editing entities *@
<div class="editor-label">
Fecha
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Transaction.TransactionDate,new { @class = "date-picker" })
@Html.ValidationMessageFor(model => model.Transaction.TransactionDate) @Model.Transaction.TransactionDate.ToString()
</div>
<div class="editor-label">
Origen:
</div>
<div class="editor-field">
@Html.DropDownListFor(model => model.Transaction.IdFrom,((IEnumerable<FlatAdmin.Domain.Entities.Account>)Model.FromAccounts).Select(option => new SelectListItem
{
Text = (option == null ? "None" : option.AccountName),Value = option.AccountId.ToString(),Selected = (Model != null) && (option.AccountId == Model.Transaction.IdFrom)
}),"Choose...")
@Html.ValidationMessageFor(model => model.Transaction.IdFrom)@Model.Transaction.IdFrom
</div>
<div class="editor-label">
Destino:
</div>
<div class="editor-field">
@Html.DropDownListFor(model => model.Transaction.IdTo,((IEnumerable<FlatAdmin.Domain.Entities.Account>)Model.ToAccounts).Select(option => new SelectListItem
{
Text = (option == null ? "None" : option.AccountName),Selected = (Model != null) && (option.AccountId == Model.Transaction.IdTo)
}),"Choose...")
@Html.ValidationMessageFor(model => model.Transaction.IdTo)@Model.Transaction.IdTo
</div>
<div class="editor-label">
Monto
</div>
<div class="editor-field">
@Html.DropDownListFor(model => model.Transaction.IdCurrency,((IEnumerable<FlatAdmin.Domain.Entities.Currency>)Model.AllCurrencies).Select(option => new SelectListItem
{
Text = (option == null ? "None" : option.CurrencyName),Value = option.CurrencyId.ToString(),Selected = (Model != null) && (option.CurrencyId == Model.Transaction.IdCurrency)
}))
@Html.EditorFor(model => model.Transaction.Amount)
@Html.ValidationMessageFor(model => model.Transaction.Amount) @Model.Transaction.Amount
</div>
<div class="editor-label">
Comentario
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Transaction.Comment)
@Html.ValidationMessageFor(model => model.Transaction.Comment)@Model.Transaction.Comment
</div>
视图：
@model FlatAdmin.Domain.ViewModels.TransactionViewModel
@using FlatAdmin.Domain.Entities
@{
ViewBag.Title = "Nueva Transaccion";
}
<h2>@ViewBag.Title</h2>
<div>
@Html.ActionLink("<< Lista de Transacciones","Index")
</div>
<br />
<div id="InputPanel">
@using (Html.BeginForm()) {
@Html.ValidationSummary(true)
<fieldset>
<legend>Elegir Actividad</legend>
<div class="editor-field">
@Html.DropDownListFor(model => model.Transaction.IdCostCentre,((IEnumerable<FlatAdmin.Domain.Entities.CostCentre>)Model.AllCostCentres).Select(option => new SelectListItem
{
Text = (option == null ? "None" : option.Name),Value = option.CostCentreId.ToString(),Selected = (Model != null) && (option.CostCentreId == Model.Transaction.IdFrom)
}),"Actividades...")
</div>
</fieldset>
<fieldset>
<legend>Transaccion</legend>
<div id="CreateDiv">
@Html.Partial("_Create",Model)
</div>
<p>
<input type="submit" name="nextRecord" value="Proxima Transaccion >>" />
</p>
<p>
...o sino,para guardar y volver a la lista de transacciones:<br /><input type="submit" value="Guardar" />
</p>
</fieldset>
}
</div>
控制器动作：
[HttpPost]
public virtual ActionResult AjaxCreate(Transaction transaction)
{
if (ModelState.IsValid)
{
service.InsertOrUpdate(transaction);
service.Save();
}
service.ChosenCostCentreId = transaction.IdCostCentre;
TransactionViewModel viewModel = new TransactionViewModel();
viewModel.Transaction = new Transaction();
viewModel.CostCentre = service.ChosenCostCentre;
viewModel.AllCostCentres = service.AllCostCentres;
viewModel.AllCurrencies = service.AllCurrencies;
viewModel.FromAccounts = service.FromAccounts;
viewModel.ToAccounts = service.ToAccounts;
return PartialView("_Create",viewModel);
}
解决方法
@Darin Dimitrov在相关主题中提出了答案.
本质上,HtmlHelpers(如Html.EditorFor,Html.TextBoxFor等)首先在ModelState中检查现有值,然后仅在模型中检查.
结果,我需要打电话给：
ModelState.Clear();
无知是如此痛苦.
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