一些必填字段不适用于 ViewModel MVC3

Question

控制器动作：

 [AjaxRequestOnly, HttpPost, Authorize]
    public ActionResult AddCreditCard(CustomerCreditCardModelView cc) {
        if (!ModelState.IsValid) {
            Response.StatusCode = 400;
            return Content(Newtonsoft.Json.JsonConvert.SerializeObject(ModelState.Values.SelectMany(v => v.Errors).Select(e=>e.ErrorMessage)));
        }
        // .... do something ...        
    }

模型视图：

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Web;
using CheckoutVC.CheckoutServiceReference;
using Newtonsoft.Json;

public class CustomerCreditCardModelView {

    [Display(Name = "Número")]
    [Required(ErrorMessage = "El Número es requerido")]
    [StringLength(20, MinimumLength = 12, ErrorMessage = "El número parece ser incorrecto")]
    [JsonIgnore, ScriptIgnore]
    public string CardNumber { get; set; }

    [Display(Name = "Código de seguridad")]
    [Required(ErrorMessage = "El Código de seguridad es requerido")]
    public string CardSecurityCode { get; set; }

    [Display(Name = "Nombre en la tarjeta")]
    [Required(ErrorMessage = "El Nombre en la tarjeta es requerido")]
    public string NameOnCard { get; set; }

    [Display(Name = "Dirección de cobro")]
    [Required(ErrorMessage = "La Dirección de cobro es requerida")]
    public string BillingAddress { get; set; }

    [Display(Name = "Mes de vencimiento")]
    [Required(ErrorMessage = "El Mes de vencimiento es requerido")]
    public int ExpirationMonth { get; set; }

    [Display(Name = "Año de vencimiento")]
    [Required(ErrorMessage = "El Año de vencimiento es requerido")]
    public int ExpirationYear { get; set; }

    [Display(Name = "Documento")]
    [Required(ErrorMessage = "El documento es requerido")]
    public string Document { get; set; }

    [Display(Name = "Tipo de tarjeta")]
    public int IdCreditCard { get; set; }

    public int IdCustomer { get; set; }
    public bool IsDeleted { get; set; }
    public int IdCustomerCreditCard { get; set; }
    public CustomerCreditCardModelView() {

    }

请求负载：

{"idCreditCard":1,"nameOnCard":"fdsa","billingAddress":"fdsa"}

请求响应：

["El Número es requerido","El Código de seguridad es requerido","El documento es requerido"]

如您所见，除了 int ExpirationMonth 和 int ExpirationYear 应该返回验证错误（必需）之外，一切都运行良好，但它们没有。

其实modelstate只有6个key....

是什么导致了这种行为？我想将 expireMonth 和 expirationYear 考虑到 [Required] DataAnnotation 属性。

这里肯定发生了同样的事情：mvc model validation required not working on all fields

编辑：阅读有关该问题的 cmets 发现问题出在使用上，而不是我的情况。我包括了使用部分。

Answer 1

这可能是因为ExpirationMonth 和ExpirationYear 属性是整数值。 Integer 是值类型，因此不能为 null，默认值为 0，从 RequiredAttribute 的角度来看是正确的。

您可以做的是将类型从int 更改为int?，使其可以为空。

见Nullable Types。

您的视图模型：

public class CustomerCreditCardModelView {

    [Display(Name = "Número")]
    [Required(ErrorMessage = "El Número es requerido")]
    [StringLength(20, MinimumLength = 12, ErrorMessage = "El número parece ser incorrecto")]
    [JsonIgnore, ScriptIgnore]
    public string CardNumber { get; set; }

    [Display(Name = "Código de seguridad")]
    [Required(ErrorMessage = "El Código de seguridad es requerido")]
    public string CardSecurityCode { get; set; }

    [Display(Name = "Nombre en la tarjeta")]
    [Required(ErrorMessage = "El Nombre en la tarjeta es requerido")]
    public string NameOnCard { get; set; }

    [Display(Name = "Dirección de cobro")]
    [Required(ErrorMessage = "La Dirección de cobro es requerida")]
    public string BillingAddress { get; set; }

    [Display(Name = "Mes de vencimiento")]
    [Required(ErrorMessage = "El Mes de vencimiento es requerido")]
    public int? ExpirationMonth { get; set; }

    [Display(Name = "Año de vencimiento")]
    [Required(ErrorMessage = "El Año de vencimiento es requerido")]
    public int? ExpirationYear { get; set; }

    [Display(Name = "Documento")]
    [Required(ErrorMessage = "El documento es requerido")]
    public string Document { get; set; }

    [Display(Name = "Tipo de tarjeta")]
    public int IdCreditCard { get; set; }

    public int IdCustomer { get; set; }
    public bool IsDeleted { get; set; }
    public int IdCustomerCreditCard { get; set; }
    public CustomerCreditCardModelView() {

    }
}

另一种方法是使验证更加严格，从名称ExpirationMonth 和ExpirationYear 我认为RangeAttribute 适合您。