使用 Fluent Validation 不显眼地验证复杂的视图模型 - MVC3

Question

我试图弄清楚为什么我的FluentValidation 没有不显眼地验证我的某些视图模型属性。

我通过 NuGet 安装了 MVC3 的 FluentValidation 包：

  Install-Package FluentValidation.MVC3

结果：

<package id="FluentValidation" version="5.0.0.1" targetFramework="net45" />
<package id="FluentValidation.MVC3" version="5.0.0.1" targetFramework="net45" />

未被验证的属性是 Guitar 类对象的一些成员，在我的视图模型中声明。 Guitar.ProductionYear 属性正在获取不显眼的验证代码，但 Guitar 对象的其他 2 个属性没有。

public Guitar Guitar1 { get; set; }
public Guitar Guitar2 { get; set; }
public Guitar Guitar3 { get; set; }

我阅读了 FluentValidation 文档，现在特别关注 limitations regarding FluentValidation's client-side validation of lists，但这不是一个列表，所以我希望有人能看到问题所在和/或提供一些建议。

我也尝试使用自定义 Guitar 对象验证器，但仍然得到相同的结果

观察

正在生成客户端验证并触发属性 FirstName、LasteName、Phone 和 Email

我确实注意到，当用户未填写这些对象时，ModelState 对这些对象无效，但我不知道为什么没有生成客户端验证并随后触发。

为 Guitar 对象生成的 HTML 表单缺少不显眼的验证属性。 FirstName、LastName、Email 和 Phone 等其他属性验证正常

示例

    <!-- Unobtrusive JS generated-->
        <input type="text" value="" name="FirstName" id="FirstName" data-val-required="'First Name' must not be empty." data-val="true" class="input-validation-error">
        <div class="messageBottom"> 
                <span data-valmsg-replace="true" data-valmsg-for="FirstName" class="field-validation-error"><span for="FirstName" generated="true" class="">'First Name' must not be empty.</span>
   </span>
 </div>

    <!-- Unobtrusive JS Partially generated for Guitar object-->
   <input type="text" value="" name="Guitar.Make" id="Guitar_Make" placeholder="Make">
        <div class="messageBottom">
        <span data-valmsg-replace="true" data-valmsg-for="Guitar1.Make" class="field-validation-valid"></span>
        </div>

        <input type="text" value="" name="Guitar1.Model" id="Guitar1_Model" placeholder="Model">
        <div class="messageBottom">
            <span data-valmsg-replace="true" data-valmsg-for="Guitar1.Model" class="field-validation-valid"></span>
        </div>

        <input type="text" value="" name="Guitar1.ProductionYear" id="Guitar1_ProductionYear" data-val-number="The field ProductionYear must be a number." data-val="true" placeholder="Production Year" class="valid">
        <div class="messageBottom">
        <span data-valmsg-replace="true" data-valmsg-for="Guitar1.ProductionYear" class="field-validation-valid">
        </span>
        </div>

谢谢

Global.asax.cs

FluentValidationModelValidatorProvider.Configure();

视图模型

[FluentValidation.Attributes.Validator(typeof(CustomerViewModelValidator))]
public class CustomerViewModel
{
    [Display(Name = "First Name")]
    public string FirstName { get; set; }

    [Display(Name = "Last Name")]
    public string LastName { get; set; }

    [Display(Name = "Phone")]
    public string Phone { get; set; }

    [Display(Name = "Email")]
    public string EmailAddress { get; set; }

    [Display(Name = "Guitar 1")]
    public Guitar Guitar1 { get; set; }

    [Display(Name = "Guitar 2")]
    public Guitar Guitar2 { get; set; }

    [Display(Name = "Guitar 3")]
    public Guitar Guitar3 { get; set; }
}

自定义吉他对象验证器

public class GuitarValidator : AbstractValidator<Guitar>
{
    public GuitarValidator()
    {
        RuleFor(x => x.Make).NotEmpty();
        RuleFor(x => x.Model).NotEmpty();
        RuleFor(x => x.ProductionYear).NotEmpty();
    }
}

视图模型验证器

public class CustomerViewModelValidator : AbstractValidator<CustomerViewModel>
{
    public CustomerViewModelValidator()
    {
        RuleFor(x => x.FirstName).NotNull();
        RuleFor(x => x.LastName).NotNull();
        RuleFor(x => x.Phone).NotNull();
        RuleFor(x => x.EmailAddress).NotNull();

        //1st Guitar Object is Required
        RuleFor(x => x.Guitar).SetValidator(new GuitarValidator());



    }
}

观点

<!-- Guitar Object #1 -->
     <div id="cosponsorsTemplate_1">
            <div class="formColumn1">@Html.LabelFor(x=>x.Guitar1)</div>
            <div class="formColumn2">@Html.TextBoxFor(x => x.Guitar1.Make, new { Placeholder = "Make" })
                <div class="messageBottom">@Html.ValidationMessageFor(x => x.Guitar1.Make)</div>
            </div>
            <div class="formColumn3">@Html.TextBoxFor(x => x.Guitar1.Model, new { Placeholder = "Model" })
                <div class="messageBottom">@Html.ValidationMessageFor(x => x.Guitar1.Model)</div>
            </div>
            <div class="formColumn4">@Html.TextBoxFor(x =>x.Guitar1.ProductionYear, new { Placeholder = "Production Year" })
                <div class="messageBottom">@Html.ValidationMessageFor(x => x.Guitar1.ProductionYear)</div>
                <a class="icon delete" data-delete-id="1">Delete</a>
            </div>
        </div>

   <!-- Guitar Object #2 -->
        <div id="cosponsorsTemplate_2">
            <div class="formColumn1">@Html.LabelFor(x=>x.Guitar2)</div>
            <div class="formColumn2">@Html.TextBoxFor(x => x.Guitar2.Make, new { Placeholder = "Make" })
                <div class="messageBottom">@Html.ValidationMessageFor(x => x.Guitar2.Make)</div>
            </div>
            <div class="formColumn3">@Html.TextBoxFor(x => x.Guitar2.Model, new { Placeholder = "Model" })
                <div class="messageBottom">@Html.ValidationMessageFor(x => x.Guitar2.Model)</div>
            </div>
            <div class="formColumn4">@Html.TextBoxFor(x => x.Guitar2.ProductionYear, new { Placeholder = "Production Year" })
                <div class="messageBottom">@Html.ValidationMessageFor(x => x.Guitar2.ProductionYear)</div>
                <a class="icon delete" data-delete-id="2">Delete</a>
            </div>
        </div>

    <!-- Guitar Object #3 -->
        <div id="cosponsorsTemplate_3">
            <div class="formColumn1">@Html.LabelFor(x=>x.Guitar3)</div>
            <div class="formColumn2">@Html.TextBoxFor(x => x.Guitar3.Make, new { Placeholder = "Make" })
                <div class="messageBottom">@Html.ValidationMessageFor(x => x.Guitar3.Make)</div>
            </div>
            <div class="formColumn3">@Html.TextBoxFor(x => x.Guitar3.Model, new { Placeholder = "Model" })
                <div class="messageBottom">@Html.ValidationMessageFor(x => x.Guitar3.Model)</div>
            </div>
            <div class="formColumn4">@Html.TextBoxFor(x => x.Guitar3.ProductionYear, new { Placeholder = "Production Year" })
                <div class="messageBottom">@Html.ValidationMessageFor(x => x.Guitar3.ProductionYear)</div>
                <a class="icon delete" data-delete-id="3">Delete</a>
            </div>
        </div>

Answer 1

文档指出复杂图形应使用专门的验证器。你可以这样使用它：

public class Customer {
  public string Name { get; set; }
  public Address Address { get; set; }
}

public class Address {
 public string Line1 { get; set; }
 public string Line2 { get; set; }
 public string Town { get; set; }
 public string County { get; set; }
 public string Postcode { get; set; }
}

public class AddressValidator : AbstractValidator<Address> {
  public AddressValidator() {
    RuleFor(address => address.Postcode).NotNull();
    //etc
  }
}

public class CustomerValidator : AbstractValidator<Customer> {
  public CustomerValidator() {
    RuleFor(customer => customer.Name).NotNull();
    RuleFor(customer => customer.Address).SetValidator(new AddressValidator())
  }

}

来自： 为复杂属性重用验证器

http://fluentvalidation.codeplex.com/wikipage?title=CreatingAValidator&referringTitle=Documentation

对于您的用例，您将为聚合对象创建一个吉他验证器和一个模型验证器。我记得有一个朋友遇到过类似的问题，因为验证器不知道如何在没有中间验证器的情况下遍历对象图。

Answer 2

我发现了问题。

吉他课

public class Guitar
{
    public string Model { get; set; }
    public int? ProductionYear { get; set; } 
    public string Make { get; set; }
}

需要一个验证器类型的装饰器

 [Validator(typeof(GuitarValidator))]

正确

    [Validator(typeof(GuitarValidator))]
    public class Guitar
    {
        public string Model { get; set; }
        public int? ProductionYear { get; set; } 
        public string Make { get; set; }
    }