问题是:当我在页面上放置2个相同类型的控件时,我需要为绑定指定不同的前缀.在这种情况下,在表单不正确之后生成的验证规则.那么如何让客户端验证工作呢?
该页面包含:
<% Html.RenderPartial(ViewLocations.Shared.PhoneEditPartial,new Phoneviewmodel { Phone = person.PhonePhone,Prefix = "PhonePhone" }); Html.RenderPartial(ViewLocations.Shared.PhoneEditPartial,new Phoneviewmodel { Phone = person.FaxPhone,Prefix = "FaxPhone" }); %>
控件ViewUserControl< Phoneviewmodel>:
<%= Html.TextBox(Model.GetPrefixed("CountryCode"),Model.Phone.CountryCode) %> <%= Html.ValidationMessage("Phone.CountryCode",new { id = Model.GetPrefixed("CountryCode"),name = Model.GetPrefixed("CountryCode") })%>
其中Model.GetPrefixed(“CountryCode”)只返回“FaxPhone.CountryCode”或“PhonePhone.CountryCode”,具体取决于前缀
这是表单后生成的验证规则.它们被复制为字段名“Phone.CountryCode”.虽然所需的结果是每个FieldNames“FaxPhone.CountryCode”,“PhonePhone.CountryCode”的2个规则(必需,数量)
alt text http://www.freeimagehosting.net/uploads/37fbe720bf.png
这个问题与Asp.Net MVC2 Clientside Validation and duplicate ID’s problem有些重复
但建议手动生成ID并没有帮助.
解决方法
为文本框和验证设置相同前缀的正确方法:
<% using (Html.BeginHtmlFieldPrefixScope(Model.Prefix)) { %> <%= Html.TextBoxFor(m => m.Address.PostCode) %> <%= Html.ValidationMessageFor(m => m.Address.PostCode) %> <% } %>
哪里
public static class HtmlPrefixScopeExtensions { public static Idisposable BeginHtmlFieldPrefixScope(this HtmlHelper html,string htmlFieldPrefix) { return new HtmlFieldPrefixScope(html.ViewData.TemplateInfo,htmlFieldPrefix); } private class HtmlFieldPrefixScope : Idisposable { private readonly TemplateInfo templateInfo; private readonly string prevIoUsHtmlFieldPrefix; public HtmlFieldPrefixScope(TemplateInfo templateInfo,string htmlFieldPrefix) { this.templateInfo = templateInfo; prevIoUsHtmlFieldPrefix = templateInfo.HtmlFieldPrefix; templateInfo.HtmlFieldPrefix = htmlFieldPrefix; } public void dispose() { templateInfo.HtmlFieldPrefix = prevIoUsHtmlFieldPrefix; } } }
(偶然在史蒂夫桑德森的博客http://blog.stevensanderson.com/2010/01/28/editing-a-variable-length-list-aspnet-mvc-2-style/的代码中找到了解决方案)
看起来像Html.EditorFor方法应该像这里建议的那样工作:ASP.NET MVC 2 – ViewModel Prefix