在ASP.NET MVC 3模板编辑器IEnumerable的模型属性 [英] IEnumerable model property in an ASP.NET MVC 3 Editor Template
问题描述
我有一个IEnumerable属性模型（警告伪code遵循）
公共类PersonModel {
公共字符串名称{;组; }
公共IEnumerable的＆LT; AddressModel＆GT;地址{搞定;组; }
}公共类AddressModel {
公共字符串名称{;组; }
}
我要显示的地址在同一视图子对象
Person.cshtml
@model PersonModel＆LT;形式为GT;
＆LT; H2＆GT;与人LT; / H＆GT; @ Html.EditorFor（M = GT; m.Name） ＆所述; UL＆GT; @ Html.EditorFor（M =＆GT; m.Addresses）所述; / UL＆GT;＆LT; /表及GT;
EditorTemplate / AddressModel
@model AddressModel＆LT;立GT; @ Html.TextboxFor（M = GT; m.Name）LT; /李＆GT;
非凡，一切工作正常。
但是，作为一个Git，我现在要开始使用模板布局来换我的标准型方式的东西。
所有属性因此，我创建string.cshtml和list.cshtml做到这一点，用一个_Control.cshtml的布局
EditorTemplates / _Control.cshtml
＆LT; DIV＆GT;
@ Html.Label（的String.Empty）
＆LT; DIV CLASS =输入＆GT;
@RenderBody（） @ Html.ValidationMessage（的String.Empty）
＆LT; / DIV＆GT;
＆LT; / DIV＆GT;
EditorTemplates / string.cshtml
@model串
@ {
布局=_Control.cshtml;
}
@ Html.TextBox（的String.Empty，型号）
（到目前为止耶！但等待...哦不...）
这里的麻烦
＆LT; UL＆GT; @ Html.EditorFor（M = GT; m.Addresses）LT; / UL＆GT;
从主视图（见上文）成为
@ Html.EditorFor（M = GT; m.Addresses，列表）
EditorTemplates / list.cshtml
@model IEnumerable的＆LT;对象＆gt;
@ {
布局=_Control.cshtml;
}
＆LT; UL＆GT;
@foreach（以型号VAR项）{
@ Html.EditorFor（M = GT;项）
}
＆LT; / UL＆GT;
此呈现的ID和名称错误，类似Addresses_item_Name，其不包含的Id，因此添加的ID与用于循环
@for（VAR I = 0; I＆LT; Model.Count（）;我++）{
@ Html.EditorFor（M =＆GT; Model.ElementAt（i））的
}
这炸毁的MVC前pression帮手不允许任何东西，但阵列，但地址必须是IEnumerable的＆LT;>，因为EF4.1不支持.ToArray一个子查询，即在
。 VAR模型=（上接第在DataContext.People
其中，p.Id = 1
选择新PersonModel {
名称= p.Name，
地址=（来自于p.Addresses
选择新AddressModel {
NAME = a.Name
}）。ToArray的（）// **不支持的**
}）FirstOrDefault（）。
有没有人碰到这个？
是否有做标准的方式？
这工作，但它是正确的？
EditorTemplates / list.cshtml
@model IEnumerable的＆LT;对象＆gt;
@ {
布局=_Control.cshtml;
VAR preFIX = ViewData.TemplateInfo.HtmlField preFIX;
}
＆LT; UL＆GT;
@for（VAR I = 0; I＆LT; Model.Count（）;我++）{
变种项= Model.ElementAt（ⅰ）;
ViewData.TemplateInfo.HtmlField preFIX =的String.Format（{0} [{1}]，preFIX，我）;
@ Html.EditorFor（M = GT;的项目，空，的String.Empty）
}
＆LT; / UL＆GT;
期望的结构是
＆LT;形式为GT;
＆lt;控制＆GT;
人名控制元件
＆lt;控制＆GT; ＆lt;控制＆GT;
地址列表控制元件
＆lt;控制＆GT;
＆LT; /表及GT;
该EditorFor不允许放东西的属性类型，而不是方法，这将是它为什么快死了。
我的建议是创建模板可以通过一个地址的项目，然后使用一个循环之外编辑出每一个，或使用editorformodel它会替你。
硅
I have a model which has an IEnumerable property (warning pseudo-code to follow)
public class PersonModel {
public string Name { get; set; }
public IEnumerable<AddressModel> Addresses { get; set; }
}
public class AddressModel {
public string Name { get; set; }
}
I want to display the Address sub-objects in the same view
Person.cshtml
@model PersonModel
<form>
<h2>Person</h2>
@Html.EditorFor(m=>m.Name)
<ul>@Html.EditorFor(m=>m.Addresses)</ul>
</form>
EditorTemplate/AddressModel
@model AddressModel
<li>@Html.TextboxFor(m=>m.Name)</li>
Marvellous, all works fine
But, being a git, I now want to start using Template Layouts to wrap all my properties in a standard type way and stuff
So I create a string.cshtml and a list.cshtml to do this, with a _Control.cshtml for the layout
EditorTemplates/_Control.cshtml
<div>
@Html.Label(string.Empty)
<div class="input">
@RenderBody()
@Html.ValidationMessage(string.Empty)
</div>
</div>
EditorTemplates/string.cshtml
@model string
@{
Layout = "_Control.cshtml";
}
@Html.TextBox(string.Empty, Model)
(so far yay! but wait.. oh no..)
Here's the trouble
<ul>@Html.EditorFor(m=>m.Addresses)</ul>
from the main view (see above) becomes
@Html.EditorFor(m=>m.Addresses, "List")
EditorTemplates/list.cshtml
@model IEnumerable<object>
@{
Layout = "_Control.cshtml";
}
<ul>
@foreach(var item in Model){
@Html.EditorFor(m => item)
}
</ul>
This renders the id and names incorrectly, something like Addresses_item_Name, which does not contain the Id, so adding the id with a for loop
@for (var i = 0; i < Model.Count();i++ ) {
@Html.EditorFor(m => Model.ElementAt(i))
}
This blows up as the MVC expression helper does not allow anything but arrays, but Addresses has to be IEnumerable<> because EF4.1 does not support .ToArray inside a sub-query ie.
var model = (from p in DataContext.People
where p.Id = 1
select new PersonModel {
Name = p.Name,
Addresses = (from a in p.Addresses
select new AddressModel {
Name = a.Name
}).ToArray() // **NOT SUPPORTED**
}).FirstOrDefault();
Has anyone come up against this? Is there are standard way to do it?
This works, but is it right?
EditorTemplates/list.cshtml
@model IEnumerable<object>
@{
Layout = "_Control.cshtml";
var prefix = ViewData.TemplateInfo.HtmlFieldPrefix;
}
<ul>
@for (var i = 0; i < Model.Count();i++ ) {
var item = Model.ElementAt(i);
ViewData.TemplateInfo.HtmlFieldPrefix = string.Format("{0}[{1}]",prefix, i);
@Html.EditorFor(m => item, null, string.Empty)
}
</ul>
The desired structure is
<form>
<control>
Person Name Control Elements
<control>
<control>
Address List Control Elements
<control>
</form>
The EditorFor doesn't allow anything put property types, not methods, this will be why it is dying.
My advice would be to create the template as a single address item, then use a loop outside to edit out each one, or use editorformodel which does that for you.
Si
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