Question

我有一个简单的表单，其中包含一个项目列表，我想将它们发布到控制器，但有趣的是我不能。除了列表之外，其他所有内容都会正常运行。我在firebug中检查了ajax调用，并且post值是这样的：

Answers[0].IsMissing    False
Answers[0].Text Ja
Answers[0].Value    0
Answers[1].IsMissing    False
Answers[1].Text Nein
Answers[1].Value    1
Id  1cd14b08-ce3b-4671-8cf8-1bcf69f12b2d
Name    Ja/Nein

我有一个具有以下属性的AnwserScheme类：

public string Name { get; set; }
public bool IsMissing { get; set; }
public List<AnswerDisplayItem> Answers { get; set; }

public AnswerScheme()
{
    Answers = new List<AnswerDisplayItem>();
}

我有这个视图代码：

@for (int i = 0; i < Model.Answers.Count; i++) {
    <tr>
        <td>
            @Html.HiddenFor(model => Model.Answers[i].IsMissing)
            @Html.TextBoxFor(model => Model.Answers[i].Value, 
                             new { @class = "inputValue" })
        </td>
        <td>
            @Html.TextBoxFor(model => Model.Answers[i].Text, 
                             new { @class = "inputAnswer" })
        </td>
        <td>
            <span class="span-delete" 
                  data-answer-scheme-id="@Model.Id" 
                  data-answer-id="@Model.Answers[i].Id" >x</span>
        </td>
    </tr>
}

我有这条负责发布的ajax代码：

$.ajax({
    url: "/AnswerScheme/AddAnswer",
    type: "post",
    data: $("#formAnswerScheme").serialize(),
    success: function (data) {
                 console.log(data);
                 $("#divAnswerSchemeContainer").html(data);
             }
});

我的控制器中有一个添加答案操作：

[HttpPost]
public PartialViewResult AddAnswer(AnswerScheme answerScheme)
{
    ...some logic comes here
}

所以最后控制器收到模型，但只收到简单的属性，而不是列表。任何帮助将不胜感激！欢呼声。

Answer 1

我希望我能看到更多你的课程和代码，因为你没有正确的设置。

我从你提供的东西中重新创造了一些东西，这是有效的。我为这个样本创建了一个MVC 3项目。

查看/共享/ _Layout.cshtml

<!DOCTYPE html>
<html>
<head>
    <title>@ViewBag.Title</title>
    <link href="@Url.Content("~/Content/Site.css")" rel="stylesheet" type="text/css" />
    <script src="@Url.Content("~/Scripts/jquery-1.7.1.min.js")" type="text/javascript"></script>
</head>

    <body>
        @RenderBody()
    </body>
</html>

查看/共享/ _Partial.cshtml

@model RazorListTest.Models.AnswerScheme 

<table>
@for (int i = 0; i < Model.Answers.Count; i++) {
    <tr>
        <td>
            @Html.HiddenFor(model => Model.Answers[i].IsMissing)
            @Html.TextBoxFor(model => Model.Answers[i].Value, new { @class = "inputValue" })
        </td>
        <td>
            @Html.TextBoxFor(model => Model.Answers[i].Text, new { @class = "inputAnswer" })
        </td>
        <td><span class="span-delete" data-answer-scheme-id="@Model.Id" data-answer-id="@Model.Answers[i].Id" >x</span></td>
    </tr>
}
</table>

模型/ AnswerDisplayItem.cs

using System.Collections.Generic;

namespace RazorListTest.Models
{
    public class AnswerDisplayItem
    {
        public bool IsMissing { get; set; }
        public string Text { get; set; }
        public string Value { get; set; }
        public string Id { get; set; }
    }

    public class AnswerScheme
    {
        public List<AnswerDisplayItem> Answers { get; set; }
        public string Id { get; set; }

        public AnswerScheme()
        {
            Answers = new List<AnswerDisplayItem>();
        }
    }
}

主页/ Index.cshtml

@model RazorListTest.Models.AnswerScheme

    @using (Html.BeginForm(null, null, FormMethod.Get, new { name="formAnswerScheme", id = "formAnswerScheme"}))
    {
        {Html.RenderPartial("_Partial");}

        <div>
            <input type="button" value="Click me" id="btnClick"/>
        </div>

        <div id="divAnswerSchemeContainer">

        </div>
    }

<script type="text/javascript">
    $("#btnClick").click(function () {

        $.ajax({
            url: 'Home/AddAnswer',
            type: 'POST',
            dataType: 'json',
            data: $("#formAnswerScheme").serialize(),
            success: function (data) {
                console.log(data);
                $("#divAnswerSchemeContainer").html(data);
            },
            error: function (xhr, textStatus, exceptionThrown) { alert(JSON.parse(xhr.responseText)); }
        });
    });
</script>

控制器/ HomeController.cs

using System.Collections.Generic;
using System.Web.Mvc;
using RazorListTest.Models;

namespace RazorListTest.Controllers
{
    public class HomeController : Controller
    {

        public ActionResult Index()
        {
            AnswerScheme a = new AnswerScheme();

            a.Id = "1cd14b08-ce3b-4671-8cf8-1bcf69f12b2d";

            List<AnswerDisplayItem> adi = new List<AnswerDisplayItem>();
            AnswerDisplayItem a1 = new AnswerDisplayItem();
            a1.IsMissing = false;
            a1.Text = "Ja";
            a1.Value = "0";
            a1.Id = "1234";
            AnswerDisplayItem a2 = new AnswerDisplayItem();
            a2.IsMissing = false;
            a2.Text = "Nein";
            a2.Value = "1";
            a2.Id = "5678";
            adi.Add(a1);
            adi.Add(a2);
            a.Answers = adi;
            return View(a);
        }

        [HttpPost]
        public JsonResult AddAnswer(AnswerScheme answerScheme)
        {
            return Json("the list is in the Model.");
        }
    }
}

Answer 2

你可以这样做创建模型

 public class ApplicationInfo
{
        public List<ApplicationAccessRoles> ApplAccessRoleInfo { get; set; }
    }

 public class ApplicationAccessRoles
{
    public int app_access_role_key { get; set; }
    public int app_key { get; set; }
    public string access_role { get; set; }
    public bool inactive { get; set; }
}

把它放在视野中

       <div class="step-pane" id="step3">
                    <div class="form-horizontal" style="vertical-align:central;margin-left:150px">
                        <table id="RolesDetails" cellpadding="0" cellspacing="0" class="data_table">
                            <tr class="dataheader">
                                <td class="width5">
                                    &nbsp;
                                    @Html.HiddenFor(m => m.app_access_role_key)
                                </td>
                                <td class="width200">
                                    Access Roles Name
                                </td>
                                <td class="width10">
                                    Inactive
                                </td>

                            </tr>
                            @if (Model.ApplAccessRoleInfo.Count!= 0)
                            {
                                var chk = Model.ApplAccessRoleInfo.Count;
                                for (int a = 0; a < Model.ApplAccessRoleInfo.Count; a++)
                                {
                                    <tr class="exp_col_header top_border_nil">
                                       @if ((chk - 1) == a)
                                        { 
                                        <td><a href="#" class="gridexpand" rel="1"></a></td>
                                        }
                                        else
                                        {
                                            <td></td>
                                        }
                                        <td>
                                            @Html.HiddenFor(m => m.ApplAccessRoleInfo[a].app_access_role_key)
                                            @Html.EditorFor(m => m.ApplAccessRoleInfo[a].access_role)
                                        </td>
                                        <td>
                                            @Html.CheckBox("ApplTeamAccessInfo[" + a.ToString() + "].inactive", false, new { @class = "check-box"})
                                        </td>
                                    </tr>
                                }
                            }
                            else
                                {
                                    <tr class="exp_col_header top_border_nil">
                                    <td>
                                        <a href="#" class="gridexpand" rel="1"></a>
                                    </td>
                                    <td>
                                        @*@Html.EditorFor(model => model.access_role)*@
                                        @*@Html.EditorFor(m => m.ApplAccessRoleInfo[0].access_role)*@
                                        @Html.EditorFor(model=>model.access_role)
                                    </td>
                                    <td>
                                        @Html.CheckBoxFor(model => model.inactive)
                                    </td>
                                    </tr>

                            }
                        </table>

                    </div>
                </div>

在控制器

中

  var main = (from a in db.mas_app_access_roles
                    where a.app_key == AppInfo.app_key
                    select new  ApplicationAccessRoles
                    {
                        app_access_role_key = a.app_access_role_key,
                        access_role = a.access_role,
                        inactive = a.inactive,
                    }).ToList();
        access = main;
        AppInfo.ApplAccessRoleInfo = access;
        ViewBag.check = access;

        return View(AppInfo);

Answer 3

问题在于文本框和其他输入控件的 name / id 属性。您可以使用editor templates使事情无缝且可重复使用。另一个示例here。

但是，如果您仍想要循环播放，那么您的循环必须在这些示例here或here中查看。

Answer 4

它与TheGeekYouNeed发布的几乎相同，但我想有些东西只是缺失了。我不知道那可能是什么。

AnswerScheme观点：

@using System.Web.Mvc.Html
@using MetaDataPortal.Models
@model AnswerScheme

 @{
ViewBag.Title =  @Model.IsMissing ? "Missing" : "AnswerScheme";
Layout = "~/Views/Shared/_Layout.cshtml";
}

@section CssContent{
<link href="../../Content/CSS/AnswerScheme.css" rel="stylesheet" />
}


 @using (Html.BeginForm("Save", "AnswerScheme", FormMethod.Post, new { id = "formAnswerScheme" })) {

<div id="divAnswerSchemeContainer">
    @{Html.RenderPartial("_AnswerScheme", Model);}
</div>
<input type="button" class="clear inputButton" id="buttonAddCode" value="Add @(Model.IsMissing ? "Missing" : "Answer")" />

<input type="submit" value="Save" />
}

 @section Javascript{
<script type="text/javascript">
    $(function () {
        $("#buttonAddCode").click(function () {
            $.ajax({
                url: "/AnswerScheme/AddAnswer",
                type: "post",
                async: false,
                data: $("#formAnswerScheme").serialize(),
                success: function (data) {
                    console.log(data);
                    $("#divAnswerSchemeContainer").html(data);
                }
            });
            return false;
        });
    });

</script>
<script type="text/javascript" src="~/Content/JavaScript/AnswerScheme.js"></script>
 }

_AnswerScheme partialview

        @model MetaDataPortal.Models.AnswerScheme

        @Html.HiddenFor(model => model.Id, new { Id = "AnswerSchemeId" })
            <ul class="ulGeneralForm">
                <li>
                    @Html.LabelFor(model => model.Name, "Name", new { @class = "labelGeneral" })
                    @Html.TextBoxFor(model => model.Name, Model.Name, new { @class = "textBoxGeneral" })
                </li>
                <li>
                    @Html.Label(@Model.IsMissing ? "Missings" : "Answers", new { @class = "labelGeneral" })
                    <table class="textualData links downloadList">
                        <thead>
                            <tr>
                                <th>Value</th>
                                <th> @(Model.IsMissing ? "Missing" : "Answer")</th>
                                <th></th>
                            </tr>
                        </thead>
                        <tbody id="tbodyCodeContainer">
                            @for (int i = 0; i < Model.Answers.Count; i++) {
                                <tr>
                                    <td>
                                        @Html.HiddenFor(model => Model.Answers[i].IsMissing)
                                        @Html.TextBoxFor(model => Model.Answers[i].Value, new { @class = "inputValue" })
                                    </td>
                                    <td>
                                        @Html.TextBoxFor(model => Model.Answers[i].Text, new { @class = "inputAnswer" })
                                    </td>
                                    <td><span class="span-delete" data-answer-scheme-id="@Model.Id" data-answer-id="@Model.Answers[i].Id" >x</span></td>
                                </tr>
                            }
                        </tbody>
                    </table>
                </li>
            </ul>

AnswerScheme.cs：

 using System;
 using System.Collections.Generic;
 using System.Linq;

 using Opit.Rogatus.DomainObjects;


 namespace MetaDataPortal.Models
 {
public class AnswerScheme : BaseModel
{
    public string Name { get; set; }
    public bool IsMissing { get; set; }

    public List<AnswerDisplayItem> Answers { get; set; }

    public AnswerScheme()
    {
        Answers = new List<AnswerDisplayItem>();
    }

    public AnswerScheme(CodeList codeList, bool isMissing) : this()
    {
        Id = codeList.Id;
        Name = codeList.Name;
        IsMissing = isMissing;
        foreach (Code code in codeList.Codes.Where(code => code.Category.IsMissing == isMissing))
        {
            Answers.Add(new AnswerDisplayItem(code));
        }
    }
      }
    }

AnswerDisplayItem.cs：

    using System;

    using Opit.Rogatus.DomainObjects;


    namespace MetaDataPortal.Models
    {
        public class AnswerDisplayItem
        {
            public Guid Id { get; private set; }
            public short Value { get; private set; }
            public string Text { get; private set; }
            public Guid AnswerSchemeId { get; set; }
            public bool IsMissing { get; private set; }

            public AnswerDisplayItem()
            {
            }

            public AnswerDisplayItem(Code code)
            {
                Id = code.Id;
                Value = code.Value;
                Text = code.Category.Name;
                IsMissing = code.Category.IsMissing;
                if (code.CodeList == null) return;

                AnswerSchemeId = code.CodeList.Id;
            }
        }
    }

控制器几乎一样。

Answer 5

尝试将控制器参数名称更改为“answers”或将属性名称更改为AnswerScheme，如果帖子中的部分控制器应该接收列表，则将类型更改为：

List<AnswerScheme> answers

如何在MVC中发布项目列表

5 个答案: