我的模型中名为 Title 的属性与视图中的 View.Title 之间的绑定冲突(在 MVC 中) [英] Binding conflict between a property named Title in my Model and View.Title in my View (in MVC)
问题描述
我的模型包含一个名为 Title 的属性，在我的 Create 视图中，我使用 ViewBag.Title 设置页面标题.
这会产生以下问题:Html.Editor 生成的表单将显示来自 ViewBag.Title 的文本，而不是模型的 Title> 价值.
我发现的唯一解决方法是先调用 Html.Editor，然后设置 View.Title.
有人有更好的解决方案吗?
编辑 1:我使用的是 MVC 3.
编辑 2:这是我的 DisplayTemplates/Object.cshtml:
@model 动态@using Iconum.VS10CS040.Library.Web.MVC3.Helpers@if (ViewData.TemplateInfo.TemplateDepth > 1) {<span class="editor-object simple">@ViewData.ModelMetadata.SimpleDisplayText</span>} 别的 {foreach (ViewData.ModelMetadata.Properties.Where(下午 =>pm.ShowForEdit&&!ViewData.TemplateInfo.Visited(pm)&&pm.ModelType != typeof(System.Data.EntityState)&&!pm.IsComplexType)){如果(prop.HideSurroundingHtml){<text>@Html.Editor(prop.PropertyName)</text>} 别的 {字符串 css = "";if (prop.Model != null && prop.Model.GetType() != null){css += " " + prop.Model.GetType().ToString().ToLower().Replace('.', '-');}if (prop.DataTypeName != null){css += " " + prop.DataTypeName.ToLower();}if (prop.IsRequired && prop.ModelType.FullName != "System.Boolean"){css +=需要"；}<div class="editor-container @css"><div class="editor-label">@if (!String.IsNullOrEmpty(Html.Label(prop.PropertyName).ToHtmlString())){//使用 LabelWithForThatMatchesTheIdOfTheInput 而不是 Label 因为一个错误(在 MVC 3 中修复)@Html.LabelWithForThatMatchesTheIdOfTheInput(prop.PropertyName)}@if (prop.IsRequired && prop.ModelType.FullName != "System.Boolean"){@Html.Raw(" <span class="required">*<span>");}<div class="editor-field">@* 这是导致我的问题的行 *@@Html.Editor(prop.PropertyName)@Html.ValidationMessage(prop.PropertyName)
}}//foreach//使用 TemplateHint (UIHint) 循环遍历模型中的所有项目foreach (ViewData.ModelMetadata.Properties.Where(下午 =>pm.ShowForEdit&&!ViewData.TemplateInfo.Visited(pm)&&pm.ModelType != typeof(System.Data.EntityState)&&!pm.IsComplexType&&pm.TemplateHint != null&&(pm.TemplateHint == "jWYSIWYG0093"||pm.TemplateHint == "jQueryUIDatepicker"||pm.TemplateHint == "CKEditor"))){//TODO: 检查重复的 js 文件包含@Html.Editor(prop.PropertyName, prop.TemplateHint + "-Script")}}
我建议使用 EditorFor 而不是 Editor.
Html.EditorFor(x => x.Title)代替:
Html.Editor("Title")通过这种方式，视图不仅可以利用您的视图模型，而且在这种情况下它的行为也符合预期.
ASP.NET MVC 3.0 RTM (Razor) 示例:
型号:
公共类 MyViewModel{公共字符串标题{获取；放;}}控制器:
公共类 HomeController : 控制器{公共 ActionResult 索引(){ViewBag.Title = "ViewBag 标题";ViewData["Title"] = "ViewData 标题";var 模型 = 新的 MyViewModel{标题 = "模型标题"};返回视图(模型)；}}查看:
@model AppName.Models.MyViewModel@{ViewBag.Title = "首页";}@Html.EditorFor(x => x.Title)@{ViewBag.Title = "其他标题";}因此，无论我们在这里如何滥用，编辑器模板都会使用正确的模型标题(如果我们使用 Html.Editor("Title")，则情况并非如此).
My Model contains a property named Title, and in my Create view I set the page title using ViewBag.Title.
This creates the following problem: the form generated by Html.Editor will display the text from ViewBag.Title, instead of the model's Title value.
The only workaround I have found is first calling Html.Editor, and then setting the View.Title.
Does anyone have a better solution?
Edit 1: I am using MVC 3.
Edit 2: This is my DisplayTemplates/Object.cshtml:
@model dynamic
@using Iconum.VS10CS040.Library.Web.MVC3.Helpers
@if (ViewData.TemplateInfo.TemplateDepth > 1) {
<span class="editor-object simple">@ViewData.ModelMetadata.SimpleDisplayText</span>
} else {
foreach (var prop in ViewData.ModelMetadata.Properties.Where(
pm =>
pm.ShowForEdit
&& !ViewData.TemplateInfo.Visited(pm)
&& pm.ModelType != typeof(System.Data.EntityState)
&& !pm.IsComplexType
)
)
{
if (prop.HideSurroundingHtml) {
<text>@Html.Editor(prop.PropertyName)</text>
} else {
string css = "";
if (prop.Model != null && prop.Model.GetType() != null)
{
css += " " + prop.Model.GetType().ToString().ToLower().Replace('.', '-');
}
if (prop.DataTypeName != null)
{
css += " " + prop.DataTypeName.ToLower();
}
if (prop.IsRequired && prop.ModelType.FullName != "System.Boolean")
{
css += " required";
}
<div class="editor-container @css">
<div class="editor-label">
@if (!String.IsNullOrEmpty(Html.Label(prop.PropertyName).ToHtmlString()))
{
// Use LabelWithForThatMatchesTheIdOfTheInput instead of Label because of a bug (fixed in MVC 3)
@Html.LabelWithForThatMatchesTheIdOfTheInput(prop.PropertyName)
}
@if (prop.IsRequired && prop.ModelType.FullName != "System.Boolean")
{
@Html.Raw(" <span class="required">*<span>");
}
</div>
<div class="editor-field">
@* This the line that causes my problem *@
@Html.Editor(prop.PropertyName)
@Html.ValidationMessage(prop.PropertyName)
</div>
</div>
}
} //foreach
// Loop though all items in the Model with an TemplateHint (UIHint)
foreach (var prop in ViewData.ModelMetadata.Properties.Where(
pm => pm.ShowForEdit
&& !ViewData.TemplateInfo.Visited(pm)
&& pm.ModelType != typeof(System.Data.EntityState)
&& !pm.IsComplexType
&& pm.TemplateHint != null
&& (
pm.TemplateHint == "jWYSIWYG0093"
||
pm.TemplateHint == "jQueryUIDatepicker"
||
pm.TemplateHint == "CKEditor"
)
)
)
{
// TODO: check for duplicate js file includes
@Html.Editor(prop.PropertyName, prop.TemplateHint + "-Script")
}
}
I would recommend using EditorFor instead of Editor.
Html.EditorFor(x => x.Title)
instead of:
Html.Editor("Title")
This way not only that the view takes advantage of your view model but it behaves as expected in this case.
Example with ASP.NET MVC 3.0 RTM (Razor):
Model:
public class MyViewModel
{
public string Title { get; set; }
}
Controller:
public class HomeController : Controller
{
public ActionResult Index()
{
ViewBag.Title = "ViewBag title";
ViewData["Title"] = "ViewData title";
var model = new MyViewModel
{
Title = "Model title"
};
return View(model);
}
}
View:
@model AppName.Models.MyViewModel
@{
ViewBag.Title = "Home Page";
}
@Html.EditorFor(x => x.Title)
@{
ViewBag.Title = "Some other title";
}
So no matter how much we try to abuse here the editor template uses the correct model title (which is not the case if we used Html.Editor("Title")).
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