javascript - ASP.NET MVC - jQuery POST 方法为 null

Question

我正在调用 PartialView并将其注入(inject) <div>来自另一个PartialView使用 Boostrap Modal 使其弹出模式。 到目前为止，我的 Boostrap Modal 按预期显示，但行为不按预期。以下是我在 Boostrap Modal 中的目标。

1. 制作 Boostrap 模态 - 确定
2. 在 Boostrap Modal 上添加验证 - 确定
3. 发送我的模态值以保存在数据库中 - 不行

这是<div>我在其中注入(inject) PartialView并将其设为模态

<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<div class="modal-dialog" role="document">
    <div class="modal-content">
        <div class="modal-header">
            <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
            <h4 class="modal-title" id="myModalLabel">Create Sample</h4>
        </div>
        <div class="modal-body">
            <div id="modalBodyContainer">

            </div>
        </div>
        <div class="modal-footer">
            <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
            <button type="button" class="btn btn-primary" id="btnCreateSample">Create</button>
        </div>
    </div>
</div>

PartialView 显示为 Boostrap Modal(这将被注入(inject)到上面的 <div> 中)

@model WebSensoryMvc.Models.SampleData

 @using (Html.BeginForm("Create", "SessionData", FormMethod.Post, new { id = "FormCreateSample", name = "FormCreateSample" }))
 {
@Html.AntiForgeryToken()

<div class="container">
    <div class="form-horizontal">
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })

        <div class="row">
            <div class="form-group">
                @Html.LabelFor(model => model.GroupNo, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.EditorFor(model => model.GroupNo, new { htmlAttributes = new { @class = "form-control" } })
                    @Html.ValidationMessageFor(model => model.GroupNo, "", new { @class = "text-danger" })
                </div>
            </div>
        </div>

        <div class="row">
            <div class="form-group">
                @Html.LabelFor(model => model.MaterialID, "Material", htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.DropDownList("MaterialID", null, htmlAttributes: new { @class = "form-control" })
                    @Html.ValidationMessageFor(model => model.MaterialID, "", new { @class = "text-danger" })
                </div>
            </div>
        </div>

        <div class="row">
            <div class="form-group">
                @Html.LabelFor(model => model.SampleCode, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.EditorFor(model => model.SampleCode, new { htmlAttributes = new { @class = "form-control" } })
                    @Html.ValidationMessageFor(model => model.SampleCode, "", new { @class = "text-danger" })
                </div>
            </div>
        </div>

        <div class="row">
            <div class="form-group">
                @Html.LabelFor(model => model.BatchCode, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.EditorFor(model => model.BatchCode, new { htmlAttributes = new { @class = "form-control text-uppercase" } })
                    @Html.ValidationMessageFor(model => model.BatchCode, "", new { @class = "text-danger" })
                </div>
            </div>
        </div>

        <div class="row">
            <div class="form-group">
                @Html.LabelFor(model => model.SizeID, "Size", htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.DropDownList("SizeID", null, htmlAttributes: new { @class = "form-control" })
                    @Html.ValidationMessageFor(model => model.SizeID, "", new { @class = "text-danger" })
                </div>
            </div>
        </div>

        <div class="row">
            <div class="form-group">
                @Html.LabelFor(model => model.AgeID, "Age", htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.DropDownList("AgeID", null, htmlAttributes: new { @class = "form-control" })
                    @Html.ValidationMessageFor(model => model.AgeID, "", new { @class = "text-danger" })
                </div>
            </div>

        </div>

        <div class="row">
            <div class="form-group">
                @Html.LabelFor(model => model.TemperatureID, "Temperature", htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.DropDownList("TemperatureID", null, htmlAttributes: new { @class = "form-control" })
                    @Html.ValidationMessageFor(model => model.TemperatureID, "", new { @class = "text-danger" })
                </div>
            </div>
        </div>

        <div class="row">
            <div class="form-group">
                @Html.LabelFor(model => model.PackagingTypeID, "Packaging Type", htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.DropDownList("PackagingTypeID", null, htmlAttributes: new { @class = "form-control" })
                    @Html.ValidationMessageFor(model => model.PackagingTypeID, "", new { @class = "text-danger" })
                </div>
            </div>
        </div>

        <div class="row">
            <div class="form-group">
                @Html.LabelFor(model => model.Spike, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    <div class="checkbox">
                        @Html.EditorFor(model => model.Spike)
                        @Html.ValidationMessageFor(model => model.Spike, "", new { @class = "text-danger" })
                    </div>
                </div>
            </div>
        </div>

        <div class="row">
            <div class="form-group">
                @Html.LabelFor(model => model.SampleType, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.EditorFor(model => model.SampleType, new { htmlAttributes = new { @class = "form-control" } })
                    @Html.ValidationMessageFor(model => model.SampleType, "", new { @class = "text-danger" })
                </div>
            </div>
        </div>

        <div class="row">
            <div class="form-group">
                @Html.LabelFor(model => model.Remarks, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.EditorFor(model => model.Remarks, new { htmlAttributes = new { @class = "form-control" } })
                    @Html.ValidationMessageFor(model => model.Remarks, "", new { @class = "text-danger" })
                </div>
            </div>
        </div>
    </div>
</div>
 }

目前，我很难调试将模态值保存在数据库中。我正在使用ajax调用 Controller 中的方法。但是，我遇到了以下问题。

1. 当执行以下代码时，$('#FormCreateSample').serialize()预计返回 PartialView 的模型为空，其中所有属性均为空。

     $(document).ready(function () {
        $("#btnModal").on('click', function () {
       var url = "/SessionData/Create";
   
       $.ajax({
           url: url,
           type: 'GET',
           success: function (data) {
               $('#modalBodyContainer').html(data)
               $('#myModal').modal('show');
   
               $("#btnCreateSample").off().on('click', function () {
   
                   var form = $('form');
   
                   form.data('validator', null);
                   $.validator.unobtrusive.parse(form);
   
                   if ($('form').valid()) {
   
                       $.ajax({
                           url: "/SessionData/Create",
                           type: "POST",
                           data: $('#FormCreateSample').serialize(),
                           success: function () {
                               alert("POST success");
                           },
                           error: function () {
                               alert("POST error");
                           }
                       });
   
                   }
               });
           }
       });
   });
    });
   

2. 因为我在 Controller 中的操作方法有 [ValidateAntiForgeryToken]注释，上面的脚本抛出异常“ token 不存在...”。为了解决这个问题，我更新了代码并添加了以下代码行。

    var token = $('input[name="__RequestVerificationToken"]').val();
     $.ajax({
        url: "/SessionData/Create",
        type: "POST",
        data: { $('#FormCreateSample').serialize(), __RequestVerificationToken: token },
       success: function () {
          alert("POST success");
       },
       error: function () {
           alert("POST error");
       }
    });
   

#2 方法的问题是，它通过了 null我的操作方法中的值 sampleData范围。下面是我 Controller 中的操作方法。

    [HttpPost]
    [ValidateAntiForgeryToken]
    public void Create(SampleData sampleData)
    {
        if (ModelState.IsValid)
        {
            sampleData.SessionID = Convert.ToInt32(TempData["CurrentSessionId"]);

            db.SampleDatas.Add(sampleData);
            db.SaveChanges();

            RedirectToAction("List", "SessionData");
        }

    }

任何人都知道为什么 $("FormCreateSample").serialize()是 null ？或者可能找不到表单 ID FormCreateSample？

TIA

更新1 使用第一个答案后，模型现在传递给方法，但所有属性仍然是 null .

Answer 1

您需要在 ajax 调用的消息 header 中添加 AntiForgeryToken:

var token = $('input[name="__RequestVerificationToken"]').val();
var tokenadr = $('form[action="/SessionData/Create"] input[name="__RequestVerificationToken"]').val(); 

var headers = {};
var headersadr = {};
headers['__RequestVerificationToken'] = token;
headersadr['__RequestVerificationToken'] = tokenadr;

 $.ajax({
 url: "/SessionData/Create",
 type: "POST",
 headers: headersadr,
 data: "__RequestVerificationToken=" + token + "" + $('form[action="/SessionData/Create"]').serialize(),
success: function () {
   alert("POST success");
},
error: function () {
    alert("POST error");
}
});