Entity framework ASP.NET MVC 3仅使用自定义ValidationAttribute为集合中的前X项验证ComplexModel.EntityCollection.Property1

我的模型描述如下。我只需要Application.References集合中前两项的引用字段子集。我希望在客户端和服务器端验证中都会发生这种情况。我有一个工作方法，我将在下面描述，但我觉得客户端相当笨拙，所以我想知道是否有更好的方法来处理这个问题。如果可能的话，我希望是泛型的，因为我在应用程序对象中还有一些其他集合要验证

EF模型

我目前正在使用Steven Sanderson的RuleException和RulesViolationExceptionExtensions从手动执行服务器端验证，如下所示：

public static class ApplicationBusinessLogic
{
    public static void RunServerValidation(Application app)
    {
        var errors = new RulesException<Application>();

        for (int i = 0; i < 3; i ++)
        {
            if (string.IsNullOrEmpty(app.References.ElementAt(i).FullName))
                errors.ErrorFor(x => x.References.ElementAt(i).FullName, "The Full Name for a first and second reference are required.");
            if (app.References.ElementAt(i).ReferenceType == null)
                errors.ErrorFor(x => x.References.ElementAt(i).ReferenceType, "The Reference Type for a first and second reference are required.");
            if (app.References.ElementAt(i).RelationshipLength == null)
                errors.ErrorFor(x => x.References.ElementAt(i).RelationshipLength, "The Relationship Length for a first and second reference are required.");
            if (string.IsNullOrEmpty(app.References.ElementAt(i).Relationship))
                errors.ErrorFor(x => x.References.ElementAt(i).Relationship, "The Relationship for a first and second reference are required.");
            if (string.IsNullOrEmpty(app.References.ElementAt(i).Phone))
                errors.ErrorFor(x => x.References.ElementAt(i).Relationship, "The Phone Number for a first and second reference are required.");
        }

        if (errors.Errors.Any())
            throw errors;
    }

}

当然，当我开始使用资源文件处理错误消息时，如果我决定将javascript移到.js文件中，可能会有点麻烦。我认为如果我将函数保持在视图中，我应该能够根据需要读取资源文件

[MetadataType(typeof(ReferenceMetadata))]
public partial class Reference
{
}

public class ReferenceMetadata
{
    [DisplayFormat(NullDisplayText = "N/A")]
    [DisplayName("Full Name")]
    public string FullName { get; set; }

    [DisplayFormat(NullDisplayText = "N/A")]
    [DisplayName("Reference Type")]
    public string ReferenceType { get; set; }

    [DisplayFormat(NullDisplayText = "N/A")]
    [DisplayName("How long have you known this person?")]
    public string RelationshipLength { get; set; }

    [DisplayFormat(NullDisplayText = "N/A")]
    [DisplayName("Relationship")]
    public string Relationship { get; set; }

    [DisplayFormat(NullDisplayText = "N/A")]
    [DisplayName("Phone")]
    public string Phone { get; set; }
    //...more properites
}

public static class ApplicationBusinessLogic
{
    public static void RunServerValidation(Application app)
    {
        var errors = new RulesException<Application>();

        for (int i = 0; i < 3; i ++)
        {
            if (string.IsNullOrEmpty(app.References.ElementAt(i).FullName))
                errors.ErrorFor(x => x.References.ElementAt(i).FullName, "The Full Name for a first and second reference are required.");
            if (app.References.ElementAt(i).ReferenceType == null)
                errors.ErrorFor(x => x.References.ElementAt(i).ReferenceType, "The Reference Type for a first and second reference are required.");
            if (app.References.ElementAt(i).RelationshipLength == null)
                errors.ErrorFor(x => x.References.ElementAt(i).RelationshipLength, "The Relationship Length for a first and second reference are required.");
            if (string.IsNullOrEmpty(app.References.ElementAt(i).Relationship))
                errors.ErrorFor(x => x.References.ElementAt(i).Relationship, "The Relationship for a first and second reference are required.");
            if (string.IsNullOrEmpty(app.References.ElementAt(i).Phone))
                errors.ErrorFor(x => x.References.ElementAt(i).Relationship, "The Phone Number for a first and second reference are required.");
        }

        if (errors.Errors.Any())
            throw errors;
    }

}

@for (int i = 0; i < 3; i++)
{
    ViewData.TemplateInfo.HtmlFieldPrefix = "Application.References[" + i + "]";    
    <h3>Reference @i</h3>
    @Html.ValidationMessageFor(model => model.Application.References.ElementAt(i).FullName)
    <div class="editor-label">
        @Html.LabelFor(model => model.Application.References.ElementAt(i).FullName)
    </div>                
    <div class="editor-field">   
        @Html.TextBoxFor(model => model.Application.References.ElementAt(i).FullName, new { maxlength = "100", data_val="true", data_val_required="The Full Name for a first and second reference are required." })
    </div>
    @* and so on for other properties... *@
}

@*End of Razor View file*@
<script type="text/javascript>
     function addValidationRules() {
        //references
        for (var i = 0; i < 2; i++) {

            $("#Application_References_" + i + "__FullName").rules("add", {
                required: true,
                messages: {
                    required: "The Full Name for a first and second reference are required."
                }
            });
            //etc. for other properties
        }//end for-loop
    }//end addValidationRules()
    $(document).ready(function () {
        addValidationRules();
        //more js code...
    });
</script>