MVC绑定嵌套列表 [英] MVC Binding nested list

问题描述

我有三个实体包，特征与PackageFeature如下：

套餐：结果
包标识（PK）结果
PackageTitle

功能特性：
FEATUREID（PK）结果
FeatureTitle

PackageFeature：结果
PackageFeatureId（PK）结果
包标识（FK）结果
功能（FK）结果
数量

我有一个类型为包，并允许用户编辑对导致源$ C ​​$ C以下的PackageFeature实体数量领域的MVC视图，我怎么在控制器接这个吗？我试过 [绑定（包括=PackageFeature）名单，LT;包装及GT;包和列表＆LT; PackageFeature＆GT; packageFeature 但是当我在调试器中查看前我得到的（4）列表项的正确数量，但他们的PackageIds均为0，因此他们有0项PackageFeature列表，后者还生产的4个项目，因为有8 PackageFeatures这是不正确列表 - 。然而PackageIds是正确的，其他一切被设置为0 /空

 ＆LT;形式的行动=/包/功能/方法=后＆GT;＆LT; H3＆GT;基本＆LT; / H3 GT＆;＆LT;输入数据-VAL =真正的数据-VAL-数=...数据-VAL-所需=...NAME =[0] .PackageId类型=隐藏值=2 /＆GT;＆LT; UL＆GT;
    ＆LT;立GT;
        ＆LT;跨度＆GT;无。 / SPAN＆GT;分类（如管道工）LT的;
        ＆LT;输入数据-VAL =真正的数据-VAL-数=...NAME =[0] .PackageFeature [8] .Quantity类型=文本值=1/＆GT;
        ＆所述;输入数据-VAL =真的数据-VAL-号码=...数据-VAL-需要=...名称=[0] .PackageFeature [8] .PackageFeatureId类型=隐藏VALUE =9/＆GT;
        ＆所述;输入数据-VAL =真的数据-VAL-号码=...数据-VAL-需要=...名称=[0] .PackageFeature [8] .PackageId类型=隐藏VALUE =2/＆GT;
        ＆所述;输入数据-VAL =真的数据-VAL-号码=...数据-VAL-需要=...名称=[0] .PackageFeature [8] .FeatureId类型=隐藏VALUE =9/＆GT;
    ＆LT; /李＆GT;
    ＆LT;立GT;
        ＆LT;跨度＆GT;无。的地区（例如悉尼市）LT; / SPAN＆GT;
        ＆LT;输入数据-VAL =真正的数据-VAL-数=...NAME =[0] .PackageFeature [9] .Quantity类型=文本值=1/＆GT;
        ＆所述;输入数据-VAL =真的数据-VAL-号码=...数据-VAL-需要=...名称=[0] .PackageFeature [9] .PackageFeatureId类型=隐藏VALUE =10/＆GT;
        ＆所述;输入数据-VAL =真的数据-VAL-号码=...数据-VAL-需要=...名称=[0] .PackageFeature [9] .PackageId类型=隐藏VALUE =2/＆GT;
        ＆所述;输入数据-VAL =真的数据-VAL-号码=...数据-VAL-需要=...名称=[0] .PackageFeature [9] .FeatureId类型=隐藏VALUE =10/＆GT;
    ＆LT; /李＆GT;
＆LT; / UL＆GT;＆LT; H3＆GT;青铜与LT; / H3 GT＆;＆LT;输入数据-VAL =真正的数据-VAL-数=...数据-VAL-所需=...NAME =[1] .PackageId类型=隐藏值=3 /＆GT;＆LT; UL＆GT;
    ＆LT;立GT;
        ＆LT;跨度＆GT;无。 / SPAN＆GT;分类（如管道工）LT的;
        ＆LT;输入数据-VAL =真正的数据-VAL-数=...NAME =[1] .PackageFeature [8] .Quantity类型=文本VALUE =2/＆GT;
        ＆所述;输入数据-VAL =真的数据-VAL-号码=...数据-VAL-需要=...名称=[1] .PackageFeature [8] .PackageFeatureId类型=隐藏VALUE =19/＆GT;
        ＆所述;输入数据-VAL =真的数据-VAL-号码=...数据-VAL-需要=...名称=[1] .PackageFeature [8] .PackageId类型=隐藏VALUE =3/＆GT;
        ＆所述;输入数据-VAL =真的数据-VAL-号码=...数据-VAL-需要=...名称=[1] .PackageFeature [8] .FeatureId类型=隐藏VALUE =9/＆GT;
    ＆LT; /李＆GT;
    ＆LT;立GT;
        ＆LT;跨度＆GT;无。的地区（例如悉尼市）LT; / SPAN＆GT;
        ＆LT;输入数据-VAL =真正的数据-VAL-数=...NAME =[1] .PackageFeature [9] .Quantity类型=文本VALUE =4/＆GT;
        ＆所述;输入数据-VAL =真的数据-VAL-号码=...数据-VAL-需要=...名称=[1] .PackageFeature [9] .PackageFeatureId类型=隐藏VALUE =20/＆GT;
        ＆所述;输入数据-VAL =真的数据-VAL-号码=...数据-VAL-需要=...名称=[1] .PackageFeature [9] .PackageId类型=隐藏VALUE =3/＆GT;
        ＆所述;输入数据-VAL =真的数据-VAL-号码=...数据-VAL-需要=...名称=[1] .PackageFeature [9] .FeatureId类型=隐藏VALUE =10/＆GT;
    ＆LT; /李＆GT;
＆LT; / UL＆GT;＆LT;！ - 上面再为2个包重复 - ＆GT;
 

编辑：

用于上述生成

code：

包/ Features.cshtml：

  @model名单＆LT; RenovateDTL.Package＆GT;@ {
    ViewBag.Title =包功能;
    布局=〜/查看/共享/ _OneColumnLayout.cshtml
}＆LT; H2＆GT;封装特点和LT; / H＆GT;@using（Html.BeginForm（））
{
    @ Html.DisplayForModel（）    ＆LT;按钮式=提交＆GT;保存更改LT; /按钮＆GT;
}
 

包/ DisplayTemplates / Package.cshtml：

  @model RenovateDTL.Package＆LT; H3＆GT; @ Model.Title＆LT; / H3 GT＆;@ Html.HiddenFor（M = GT; m.PackageId）＆LT; UL＆GT;
    @ Html.EditorFor（M = GT; m.PackageFeature）
＆LT; / UL＆GT;
 

/Packages/EditorTemplates/PackageFeature.cshtml：

  @model RenovateDTL.PackageFeature@using RenovateDTL.Enum@if（Model.FeatureId ==（INT）FeatureId.NumberOfCategoriesAllowed || Model.FeatureId ==（INT）FeatureId.NumberOfRegions）
{
    ＆LT;立GT;
        ＆LT;跨度＆GT; @ Model.Feature.Title＆LT; / SPAN＆GT;
        @ Html.TextBoxFor（M = GT; m.Quantity）
        @ Html.HiddenFor（M = GT; m.PackageFeatureId）
        @ Html.HiddenFor（M = GT; m.PackageId）
        @ Html.HiddenFor（M = GT; m.FeatureId）
    ＆LT; /李＆GT;
}
 

解决方案

我这样做是因为在PackageFeature.cshtml模板周围的工作，但我我最好preFER一个更精简外的任何─如果任何人有一个盒子的解决方案。

  @model RenovateDTL.PackageFeature@ {
    ViewContext.ViewData.TemplateInfo.HtmlField preFIX =PackageFeature [+ Model.PackageFeatureId +];
}@if（Model.FeatureId ==（INT）FeatureId.NumberOfCategoriesAllowed || Model.FeatureId ==（INT）FeatureId.NumberOfRegions）
{
    ＆LT;立GT;
        ＆LT;跨度＆GT; @ Model.Feature.Title＆LT; / SPAN＆GT;
        ＆LT;输入类型=隐藏的名字=PackageFeature.IndexVALUE =@ Model.PackageFeatureId/＆GT;
        @ Html.TextBoxFor（M = GT; m.Quantity）
        @ Html.HiddenFor（M = GT; m.PackageFeatureId）
        @ Html.HiddenFor（M = GT; m.PackageId）
        @ Html.HiddenFor（M = GT; m.FeatureId）
    ＆LT; /李＆GT;
}
 

I have three entities Package, Feature and PackageFeature as follows:

Package:
PackageId (PK)
PackageTitle

Feature:
FeatureId (PK)
FeatureTitle

PackageFeature:
PackageFeatureId (PK)
PackageId (FK)
Feature (FK)
Quantity

I have an MVC view that is typed to "Package" and allows the user to edit the Quantity field on the PackageFeature entity resulting in the source code below, how do I pick this up in the controller? I've tried [Bind(Include = "PackageFeature")]List<Package> package and List<PackageFeature> packageFeature but when I view the former in the debugger I get the correct number of list items (4) but their PackageIds are all 0 and consequently they have a PackageFeature list of 0 items, the latter also produces a list of 4 items which is incorrect as there are 8 PackageFeatures - however the PackageIds are correct, everything else is set to 0/null.

<form action="/packages/features/" method="post">

<h3>Basic</h3>

<input data-val="true" data-val-number="..." data-val-required="..." name="[0].PackageId" type="hidden" value="2" />

<ul>
    <li>
        <span>No. of Categories (e.g. Plumber)</span>
        <input data-val="true" data-val-number="..." name="[0].PackageFeature[8].Quantity" type="text" value="1" />
        <input data-val="true" data-val-number="..." data-val-required="..." name="[0].PackageFeature[8].PackageFeatureId" type="hidden" value="9" />
        <input data-val="true" data-val-number="..." data-val-required="..." name="[0].PackageFeature[8].PackageId" type="hidden" value="2" />
        <input data-val="true" data-val-number="..." data-val-required="..." name="[0].PackageFeature[8].FeatureId" type="hidden" value="9" />
    </li>
    <li>
        <span>No. of Regions (e.g. Sydney City)</span>
        <input data-val="true" data-val-number="..." name="[0].PackageFeature[9].Quantity" type="text" value="1" />
        <input data-val="true" data-val-number="..." data-val-required="..." name="[0].PackageFeature[9].PackageFeatureId" type="hidden" value="10" />
        <input data-val="true" data-val-number="..." data-val-required="..." name="[0].PackageFeature[9].PackageId" type="hidden" value="2" />
        <input data-val="true" data-val-number="..." data-val-required="..." name="[0].PackageFeature[9].FeatureId" type="hidden" value="10" />
    </li>
</ul>

<h3>Bronze</h3>

<input data-val="true" data-val-number="..." data-val-required="..." name="[1].PackageId" type="hidden" value="3" />

<ul>
    <li>
        <span>No. of Categories (e.g. Plumber)</span>
        <input data-val="true" data-val-number="..." name="[1].PackageFeature[8].Quantity" type="text" value="2" />
        <input data-val="true" data-val-number="..." data-val-required="..." name="[1].PackageFeature[8].PackageFeatureId" type="hidden" value="19" />
        <input data-val="true" data-val-number="..." data-val-required="..." name="[1].PackageFeature[8].PackageId" type="hidden" value="3" />
        <input data-val="true" data-val-number="..." data-val-required="..." name="[1].PackageFeature[8].FeatureId" type="hidden" value="9" />
    </li>


    <li>
        <span>No. of Regions (e.g. Sydney City)</span>
        <input data-val="true" data-val-number="..." name="[1].PackageFeature[9].Quantity" type="text" value="4" />
        <input data-val="true" data-val-number="..." data-val-required="..." name="[1].PackageFeature[9].PackageFeatureId" type="hidden" value="20" />
        <input data-val="true" data-val-number="..." data-val-required="..." name="[1].PackageFeature[9].PackageId" type="hidden" value="3" />
        <input data-val="true" data-val-number="..." data-val-required="..." name="[1].PackageFeature[9].FeatureId" type="hidden" value="10" />
    </li>
</ul>

<!-- above repeated again for 2 more packages-->

EDIT:

Code used to generate above:

Packages/Features.cshtml:

@model List<RenovateDTL.Package>

@{
    ViewBag.Title = "Package Features";
    Layout = "~/Views/Shared/_OneColumnLayout.cshtml";
}

<h2>Package Features</h2>

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

    <button type="submit">Save Changes</button>
}

Packages/DisplayTemplates/Package.cshtml:

@model RenovateDTL.Package

<h3>@Model.Title</h3>

@Html.HiddenFor(m => m.PackageId)

<ul>
    @Html.EditorFor(m => m.PackageFeature)
</ul>

/Packages/EditorTemplates/PackageFeature.cshtml:

@model RenovateDTL.PackageFeature

@using RenovateDTL.Enum

@if (Model.FeatureId == (int)FeatureId.NumberOfCategoriesAllowed || Model.FeatureId == (int)FeatureId.NumberOfRegions)
{
    <li>
        <span>@Model.Feature.Title</span>
        @Html.TextBoxFor(m => m.Quantity)
        @Html.HiddenFor(m => m.PackageFeatureId)
        @Html.HiddenFor(m => m.PackageId)
        @Html.HiddenFor(m => m.FeatureId)
    </li>
}

解决方案

I did this as a work around in the PackageFeature.cshtml template but I'm I'd prefer a more streamlined out-of-the-box solution if anyone has one.

@model RenovateDTL.PackageFeature

@{
    ViewContext.ViewData.TemplateInfo.HtmlFieldPrefix = "PackageFeature[" + Model.PackageFeatureId + "]";
}

@if (Model.FeatureId == (int)FeatureId.NumberOfCategoriesAllowed || Model.FeatureId == (int)FeatureId.NumberOfRegions)
{
    <li>
        <span>@Model.Feature.Title</span>
        <input type="hidden" name="PackageFeature.Index" value="@Model.PackageFeatureId" />
        @Html.TextBoxFor(m => m.Quantity)
        @Html.HiddenFor(m => m.PackageFeatureId)
        @Html.HiddenFor(m => m.PackageId)
        @Html.HiddenFor(m => m.FeatureId)
    </li>
}

这篇关于MVC绑定嵌套列表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！