Question

我有一个包含以下表格的数据库：DIM_Invoice，DIM_Carton，DIM_InvoiceItem。这是一个分层结构 - 发票包含一个或多个纸箱。纸箱包含一个或多个InvoiceItems。

这是我的ER图：

最终我需要创建一个分层视图，它将显示发票信息，与发票相关的纸箱以及与每个纸箱相关的InvoiceItems。每个级别都有一些应该可编辑的字段。

但是现在，我只是想让前两个级别工作：一个发票有多个与之相关的纸箱。

以下是我的模型，它们是由实体框架生成的：

namespace Invoices2.Models
{
    using System;
    using System.Collections.Generic;

    public partial class DIM_Invoice
    {
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
        public DIM_Invoice()
        {
            this.DIM_Carton = new HashSet<DIM_Carton>();
        }

        public int LPK_Invoice { get; set; }
        public string InvoiceNumber { get; set; }
        public string PONumber { get; set; }
        public Nullable<System.DateTime> InvoiceDate { get; set; }
        public Nullable<System.DateTime> OrderDate { get; set; }
        public Nullable<System.DateTime> ShipDate { get; set; }
        public string Distributor { get; set; }
        public Nullable<bool> AllReceived { get; set; }
        public Nullable<int> RowVersion { get; set; }
        public string Comments { get; set; }

        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
        public virtual ICollection<DIM_Carton> DIM_Carton { get; set; }
    }
}

namespace Invoices2.Models
{
    using System;
    using System.Collections.Generic;

    public partial class DIM_Carton
    {
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
        public DIM_Carton()
        {
            this.DIM_InvoiceItem = new HashSet<DIM_InvoiceItem>();
        }

        public int LPK_Carton { get; set; }
        public string CartonNumber { get; set; }
        public Nullable<int> LPK_Invoice { get; set; }
        public string InvoiceNumber { get; set; }
        public Nullable<int> RowVersion { get; set; }
        public string Comments { get; set; }

        public virtual DIM_Invoice DIM_Invoice { get; set; }
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
        public virtual ICollection<DIM_InvoiceItem> DIM_InvoiceItem { get; set; }
    }
}

以下是DIM_InvoiceController的编辑部分。同样，它们是由Visual Studio自动生成的，除了我编辑了Post部分，因此它不会重定向到Index视图。

// GET: DIM_Invoice/Edit/5
public ActionResult Edit(int? id)
{
    if (id == null)
    {
        return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
    }
    DIM_Invoice dIM_Invoice = db.DIM_Invoice.Find(id);
    if (dIM_Invoice == null)
    {
        return HttpNotFound();
    }
    return View(dIM_Invoice);
}

// POST: DIM_Invoice/Edit/5
// To protect from overposting attacks, please enable the specific properties you want to bind to, for 
// more details see http://go.microsoft.com/fwlink/?LinkId=317598.
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Edit([Bind(Include = "LPK_Invoice,InvoiceNumber,PONumber,InvoiceDate,OrderDate,ShipDate,Distributor,AllReceived,RowVersion,Comments")] DIM_Invoice dIM_Invoice)
{
    if (ModelState.IsValid)
    {
        db.Entry(dIM_Invoice).State = EntityState.Modified;
        db.SaveChanges();
        return View(dIM_Invoice);
        //return RedirectToAction("Index");
    }
    return View(dIM_Invoice);
}

我已将自动生成的DIM_Carton编辑视图的副本移动到Shared / EditorTemplates文件夹中，以便它可以充当EditorTemplate，然后将其简化并删除一些字段，因为我只需要显示CartonNumber字段：

@model Invoices2.Models.DIM_Carton

    <div class="form-horizontal">
        <h4>DIM_Carton</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        @Html.HiddenFor(model => model.LPK_Carton)

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

    </div>

最后，这是DIM_Invoice的编辑视图，它试图通过调用@ Html.EditorFor（model =＆gt; model.DIM_Carton）来利用DIM_Carton EditorTemplate

@model Invoices2.Models.DIM_Invoice

@{
    ViewBag.Title = "Edit";
}

<h2>Edit</h2>


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

    <div class="form-horizontal">
        <h4>DIM_Invoice</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        @Html.HiddenFor(model => model.LPK_Invoice)

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

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

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

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

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

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

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

// ***Here's the call to the EditorTemplate*** 
        <div class="form-group">
            <div class="col-md-10">
                @Html.EditorFor(model => model.DIM_Carton)
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Save" class="btn btn-default" />
            </div>
        </div>
    </div>
}

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

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

好的，我是MVC的新手，请耐心等待......这是我要解决的具体问题：

首先，我尝试使用局部视图，其中DIM_Invoice Edit视图将DIM_Carton Edit视图视为局部视图。但是，每当在浏览器中对DIM_Invoice进行编辑并回发时，部分视图中显示的信息将不会被保留（即，由于缺少更好的描述，它只是“消失”）。

在Google上搜索后，我找到了post here on stackoverflow，其中说我应该使用EditorTemplates。该帖子提供了resource for EditorTemplates，我还在simple-talk找到了另一个有用的资源。

然而，在尝试使用此方法后，我仍然遇到同样的问题......从主视图回发后，EditorTemplate中的数据不会被保留。

在谷歌搜索后，我没有找到任何有用的信息。

我注意到简单说话示例使用了一个名为“editor-field”的div类，但IntelliSense并没有给我“编辑字段”作为选项...所以也许有一个我缺少的库或者什么？

那么......如何在主视图回传后让EditorTemplate保持不变？

非常感谢任何可以提供帮助的人。

Answer 1

我已经提出了至少一个临时解决这个问题的方法，所以我现在告诉我现在做了什么才能让它发挥作用。但是，我认为这是一种黑客攻击，我应该以某种方式做得更好。所以，如果有人有任何信息我还在听。

所以基本上我创建了一个循环，它会强制页面在回发后刷新。我为Edit操作方法更改了控制器，以便在HttpPost成功时重定向到另一个名为RefreshInvoiceData的控制器操作方法：

req.getReader()

然后，RefreshInvoiceData操作方法重定向回Edit操作方法，并向其传递当前Invoice的ID。这有点让整个视图变得清爽。

// POST: DIM_Invoice/Edit/5
        // To protect from overposting attacks, please enable the specific properties you want to bind to, for 
        // more details see http://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Edit([Bind(Include = "LPK_Invoice,InvoiceNumber,PONumber,InvoiceDate,OrderDate,ShipDate,Distributor,AllReceived,RowVersion,Comments")] DIM_Invoice dIM_Invoice)
        {
            if (ModelState.IsValid)
            {
                db.Entry(dIM_Invoice).State = EntityState.Modified;
                db.SaveChanges();
                //return View(dIM_Invoice);
                //return RedirectToAction("Index");
                return RedirectToAction("RefreshInvoiceData", new { invoiceId = dIM_Invoice.LPK_Invoice.ToString() });
            }
            return View(dIM_Invoice);
        }

如果有人有更好的答案，我很乐意听到。

回发后不显示ASP.NET MVC 5 EditorTemplate

1 个答案: