Question

我正在开发一个MVC4应用程序，而且我很难用一个表单提交。我已经有4个其他提交表单完美无缺，但是这个只是拒绝工作。填写表单后，控制器中收到的对象始终填充空值。

控制器：

    [HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult Create(NcProgrammingIssue value)
    {
        if (ModelState.IsValid)
        {
            db.NcProgrammingIssues.Add(value);
            db.SaveChanges();
            return RedirectToAction("Index");
        }

        return View(value);
    }

型号：

public partial class NcProgrammingIssue
{
    public int ID { get; set; }
    public System.DateTime Date { get; set; }
    public string Employee { get; set; }
    public string JobNumber { get; set; }
    public string PartNumber { get; set; }
    public int OprSeq { get; set; }
    public string ResourceDescription { get; set; }
    public string EmployeeNum { get; set; }
    public string Severity { get; set; }
    public string LineNumbers { get; set; }
    public string Comment { get; set; }
    public string SuggestedChange { get; set; }
    public string NcProgName { get; set; }
}

查看：

@model ShopConnectMVC.Models.ShopConnectEntities

@{
ViewBag.Title = "Create";
}

<h2>Create</h2>

@using (Html.BeginForm()) {
@Html.AntiForgeryToken()
@Html.ValidationSummary(true)

<fieldset>
    <legend>NcProgrammingIssue</legend>

    <div class="editor-label">
        @Html.LabelFor(model => model.NcProgrammingIssues.Date)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.NcProgrammingIssues.Date)
        @Html.ValidationMessageFor(model => model.NcProgrammingIssues.Date)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.NcProgrammingIssues.Employee)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.NcProgrammingIssues.Employee)
        @Html.ValidationMessageFor(model => model.NcProgrammingIssues.Employee)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.NcProgrammingIssues.JobNumber)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.NcProgrammingIssues.JobNumber)
        @Html.ValidationMessageFor(model => model.NcProgrammingIssues.JobNumber)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.NcProgrammingIssues.PartNumber)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.NcProgrammingIssues.PartNumber)
        @Html.ValidationMessageFor(model => model.NcProgrammingIssues.PartNumber)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.NcProgrammingIssues.OprSeq)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.NcProgrammingIssues.OprSeq)
        @Html.ValidationMessageFor(model => model.NcProgrammingIssues.OprSeq)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.NcProgrammingIssues.ResourceDescription)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.NcProgrammingIssues.ResourceDescription)
        @Html.ValidationMessageFor(model => model.NcProgrammingIssues.ResourceDescription)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.NcProgrammingIssues.EmployeeNum)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.NcProgrammingIssues.EmployeeNum)
        @Html.ValidationMessageFor(model => model.NcProgrammingIssues.EmployeeNum)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.NcProgrammingIssues.NcProgName)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.NcProgrammingIssues.NcProgName)
        @Html.ValidationMessageFor(model => model.NcProgrammingIssues.NcProgName)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.NcProgrammingIssues.Severity)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.NcProgrammingIssues.Severity)
        @Html.ValidationMessageFor(model => model.NcProgrammingIssues.Severity)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.NcProgrammingIssues.LineNumbers)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.NcProgrammingIssues.LineNumbers)
        @Html.ValidationMessageFor(model => model.NcProgrammingIssues.LineNumbers)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.NcProgrammingIssues.Comment)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.NcProgrammingIssues.Comment)
        @Html.ValidationMessageFor(model => model.NcProgrammingIssues.Comment)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.NcProgrammingIssues.SuggestedChange)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.NcProgrammingIssues.SuggestedChange)
        @Html.ValidationMessageFor(model => model.NcProgrammingIssues.SuggestedChange)
    </div>

    <p>
        <input type="submit" value="Create" />
    </p>
</fieldset>
}

<div>
@Html.ActionLink("Back to List", "Index")
</div>

视图只是标准的脚手架，但它拒绝工作。传递给控制器的NcProgrammingIssue对象始终使用null / default值填充。这应该相当简单，因为其他4种表格在不到一天的时间内完成。

我检查了标准内容，比如将Controller变量命名为独特的内容，并确保我的属性中没有包含类名中的关键字。所有这些东西都会检查出来，但我仍然坚持同样的问题！

Answer 1

这里的主要问题是，您发布的值是NcProgrammingIssues的前缀。这是因为你正在做@Html.EditorFor(model => model.NcProgrammingIssues.Employee)。如果您花一点时间通过浏览器网络标签查看发布的值，您就会明白我在说什么。

对此的解决应该相当容易：告诉Action它应该期望前缀。

public ActionResult Create([Bind(Prefix="NcProgrammingIssues")]NcProgrammingIssue value){...}

希望这有帮助

编辑：关于模型绑定器如何工作的小注释：如果它注意到你的方法参数（在这种情况下是value）与前缀具有相同的名称，它也会自动绑定它。所以在这种情况下，你理论上只需将value重命名为NcProgrammingIssues

就可以修复它

发布的模型总是空的

1 个答案: