Question

谷歌一般用谷歌搜索还没有帮助我，所以：

我正在构建我的第一个MVC应用程序，从MVC Music Store example开始，而是构建一个小应用程序，可以创建竞技场战士并使其相互战斗。（Fighters和Fight已通过EF链接到基础表。

我有Fighters和Fights的控制器。 Actionresult的修改Fights正在运行，但对于Fighters则不然。当我点击按钮保存我的更改时，我返回到关联的索引页面，但没有提交任何更改。这是我的问题：为什么会失败？

来自 BarracksController ，错误的非更新HttpPost编辑（应该被命名为FighterController，但是neverthemind）：

        //
        // GET: /Barracks/Edit
        public ActionResult Edit(int id)
        {
            ViewData.Model = _FightDb.Fighters.Single(f => f.Id == id);
            return View();
        }


        //
        // POST: /Barracks/Edit
        [HttpPost]
        public ActionResult Edit(int id, FormCollection collection)
        {
            var fighter = _FightDb.Fighters.Single(f => f.Id == id);

            try
            {
                UpdateModel(fighter, "Fighter");
                var x = ViewData.GetModelStateErrors();
                _FightDb.SaveChanges();

                return RedirectToAction("Index");
            }
            catch
            {
                var viewModel = fighter;

                return View(viewModel);
            }

        }

（正如您所看到的，我已经包含了the GetModelStateErrors trick from this SO question，但x的结果是null）

这是可以正常工作的控制器，FightController：

   //
        // GET: /Fights/Edit
        public ActionResult Edit(int id)
        {
            var viewModel = new FightDetailsViewModel
            {
                Fight = _FightDb.Fights.Single(f => f.ID == id),
                Fighters = _FightDb.Fighters.ToList()
            };

            return View(viewModel);
        }

        //
        // POST: /Fights/Edit
        [HttpPost]
        public ActionResult Edit(int id, FormCollection collection)
        {
            var fight = _FightDb.Fights.Single(f => f.ID == id);

            try
            {
                UpdateModel(fight, "Fight");
                _FightDb.SaveChanges();

                return RedirectToAction("Index");
            }
            catch
            {
                var viewModel = new FightDetailsViewModel
                {
                    Fight = _FightDb.Fights.Single(f => f.ID == id),
                    Fighters = _FightDb.Fighters.ToList()
                };

                return View(viewModel);
            }
        }

这是战士的edit.aspx：（评论后编辑）

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Mvc3_EF_BW_Fight.Models.Fighter>" %>


<asp:Content ID="Content1" ContentPlaceHolderID="cphMain" runat="server">
    <h2>Edit</h2>

        <%: Html.EditorForModel()  %>

</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="head" runat="server">
</asp:Content>

在共享中使用以下Fighter.ascx：

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<Mvc3_EF_BW_Fight.Models.Fighter>" %>
<% using (Html.BeginForm())
   {%>
<%: Html.ValidationSummary(true) %>
<fieldset>
    <legend>Fighter</legend>
    <div class="editor-label">
        <%: Html.LabelFor(model => model.Id) %>
    </div>
    <div class="editor-field">
        <%: Html.TextBoxFor(model => model.Id) %>
        <%: Html.ValidationMessageFor(model => model.Id) %>
    </div>
    <div class="editor-label">
        <%: Html.LabelFor(model => model.FighterName) %>
    </div>
    <div class="editor-field">
        <%: Html.TextBoxFor(model => model.FighterName) %>
        <%: Html.ValidationMessageFor(model => model.FighterName) %>
    </div>
    <div class="editor-label">
        <%: Html.LabelFor(model => model.FighterStyleDescription) %>
    </div>
    <div class="editor-field">
        <%: Html.TextBoxFor(model => model.FighterStyleDescription) %>
        <%: Html.ValidationMessageFor(model => model.FighterStyleDescription) %>
    </div>
    <div class="editor-label">
        <%: Html.LabelFor(model => model.FighterLongDescription) %>
    </div>
    <div class="editor-field">
        <%: Html.TextAreaFor(model => model.FighterLongDescription) %>
        <%: Html.ValidationMessageFor(model => model.FighterLongDescription) %>
    </div>
    <p>
        <input type="submit" value="Save" />
    </p>
</fieldset>
<% } %>

这是Fights的edit.aspx

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Mvc3_EF_BW_Fight.ViewModels.FightDetailsViewModel>" %>

<asp:Content ID="Content1" ContentPlaceHolderID="cphMain" runat="server">

    <h2>Edit</h2>
    <%: Html.EditorFor(model => model.Fight, new { Fighters = Model.Fighters })%>

</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="head" runat="server">
</asp:Content>

这是Fight.ascx：

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<Mvc3_EF_BW_Fight.Models.Fight>" %>
<% using (Html.BeginForm())
   {%>
<%: Html.ValidationSummary(true) %>
<fieldset>
    <legend>Fields</legend>
    <div class="editor-label">
        <%: Html.LabelFor(model => model.ID) %>
    </div>
    <div class="editor-field">
        <%: Html.TextBoxFor(model => model.ID) %>
        <%: Html.ValidationMessageFor(model => model.ID) %>
    </div>


    <div class="editor-label">
        <%: Html.LabelFor(model => model.FightName) %>
    </div>
    <div class="editor-field">
        <%: Html.TextBoxFor(model => model.FightName) %>
        <%: Html.ValidationMessageFor(model => model.FightName) %>
    </div>
    <div class="editor-label">
        <%: Html.LabelFor(model => model.Fighter1ID) %><br />
        <%: Html.LabelFor(model => model.Fighter1Reference.Value.FighterName)%>
    </div>
    <div class="editor-field">
        <%: Html.DropDownList("Fighter1ID", new SelectList(ViewData["Fighters"] as IEnumerable, "ID", "FighterName", Model.Fighter1ID))%>
        <%: Html.ValidationMessageFor(model => model.Fighter1ID) %>
    </div>
    <div class="editor-label">
        <%: Html.LabelFor(model => model.Fighter2ID) %>
    </div>
    <div class="editor-field">
        <%: Html.DropDownList("Fighter1ID", new SelectList(ViewData["Fighters"] as IEnumerable, "ID", "FighterName", Model.Fighter1ID))%>
        <%: Html.ValidationMessageFor(model => model.Fighter2ID) %>
    </div>
    <div class="editor-label">
        <%: Html.LabelFor(model => model.Fighter1Login) %>
    </div>
    <div class="editor-field">
        <%: Html.TextBoxFor(model => model.Fighter1Login) %>
        <%: Html.ValidationMessageFor(model => model.Fighter1Login) %>
    </div>
    <div class="editor-label">
        <%: Html.LabelFor(model => model.Fighter2Login) %>
    </div>
    <div class="editor-field">
        <%: Html.TextBoxFor(model => model.Fighter2Login) %>
        <%: Html.ValidationMessageFor(model => model.Fighter2Login) %>
    </div>
    <div class="editor-label">
        <%: Html.LabelFor(model => model.FightStatusID) %>
    </div>
    <div class="editor-field">
        <%: Html.TextBoxFor(model => model.FightStatusID) %>
        <%: Html.ValidationMessageFor(model => model.FightStatusID) %>
    </div>
    <p>
        <input type="submit" value="Save" />
    </p>
</fieldset>
<% } %>

这是我的战斗视图模型：

public class FightDetailsViewModel
{
    public Fight Fight { get; set; }
    public List<Fighter> Fighters { get; set; }
}

没有ViewModel for Fighters（无论如何都没有参与此场景）。

我可以发布您可能希望看到的任何代码。

编辑：我查看了Using ViewModel Pattern with MVC 2 Strongly Typed HTML Helpers和ASP.NET MVC 2 UpdateModel() is not updating values in memory or database，但我还没有看到解决方案。

Answer 1

而不是UpdateModel(fighter, "Fighter");尝试调用updte模型，就像这个UpdateModel(fighter);一样。区别在于两个编辑，在战斗机的情况下，你的模型直接是战斗机，所以你不需要名字，而在战斗的情况下你打电话给编辑模型.Fight所以你需要名称。也请看这个问题：asp.net mvc2 - how to get model and model.something in the same way in controller?

在MVC中，一个Edit HttpPost工作，另一个不工作。我错过了什么？

1 个答案: