FluentValidation:检查两个字段中是否有一个为空
FluentValidation:检查两个字段中是否有一个为空
提问于 2014-01-14 13:49:43
我有这个型号的
public class Person
{
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
}我想要创建一个验证，用户必须填写FirstName或LastName。我安装了FluentValidation并创建了一个自定义验证器类
public class PersonValidator:AbstractValidator<Person>
{
public PersonValidator()
{
RuleFor((person=>person.FirstName)//don't know how to check if one is empty
}
}为了只检查一个字段，我可以只做RuleFor(person => person.FirstName).NotNull();
但是如何检查其中一个是否为null。
另外，一旦通过fluentValidation创建了验证，是否有可能在客户端使用它来显示错误？
Edit1
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
FluentValidationModelValidatorProvider.Configure();
}
//creating validation
namespace WebApplication1.Models.CustomValidator
{
public class PersonValidator:AbstractValidator<Person>
{
public PersonValidator()
{
RuleFor(m => m.FirstName).NotEmpty().When(m => string.IsNullOrEmpty(m.LastName)).WithMessage("*Either First Name or Last Name is required");
RuleFor(m => m.LastName).NotEmpty().When(m => string.IsNullOrEmpty(m.FirstName)).WithMessage("*Either First Name or Last Name is required");
}
}
}
//model class
[Validator(typeof(PersonValidator))]
public class Person
{
public Person()
{
InterestList = new List<string>();
}
public int Id { get; set; }
public int ContactId { get; set; }
[RequiredIfEmpty("LastName")]
public string FirstName { get; set; }
[RequiredIfEmpty("FirstName")]
public string LastName { get; set; }
public string EmailAddress { get; set; }
public string Phone { get; set; }
public string Country { get; set; }
public List<string> InterestList { get; set; }
}
//view
@model WebApplication1.Models.Person
<script src="@Url.Content("~/Scripts/jquery-1.8.2.min.js")"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.min.js")"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")"></script>
<script src="@Url.Content("~/Scripts/jquery.unobtrusive-ajax.min.js")" type="text/javascript"></script>
@Html.ValidationSummary(true)
@using(Html.BeginForm("AddPerson","Person",FormMethod.Post))
{
<div class="label">First Name</div>
<div class="input-block-level">@Html.TextBoxFor(m=>m.FirstName)@Html.ValidationMessageFor(m=>m.FirstName)</div>
<br/>
<div class="label">Last Name</div>
<div class="input-block-level">@Html.TextBoxFor(m=>m.LastName)@Html.ValidationMessageFor(m=>m.LastName)</div>
<button type="submit" class="btn-primary">Submit</button>
}回答 5
Stack Overflow用户
回答已采纳
发布于 2014-01-14 14:16:52
您可以使用何时/除非条件：
RuleFor(m => m.FirstName).NotEmpty().When(m => string.IsNullOrEmpty(m.LastName));
RuleFor(m => m.LastName).NotEmpty().When(m => string.IsNullOrEmpty(m.FirstName));或
RuleFor(m => m.FirstName).NotEmpty().Unless(m => !string.IsNullOrEmpty(m.LastName));
RuleFor(m => m.LastName).NotEmpty().Unless(m => !string.IsNullOrEmpty(m.FirstName));至于第二个问题，FluentValidation适用于客户端验证，但并不是所有规则都受支持。这里您可以找到在客户端支持的验证器：
- NotNull/NotEmpty
- 匹配(regex)
- InclusiveBetween (射程)
- CreditCard
- 电子邮件
- EqualTo (交叉属性相等比较)
- 长度
对于不在列表中的规则，您必须编写自己的FluentValidationPropertyValidator并实现GetClientValidationRules。您可以通过简单的搜索在StackOverflow上找到这方面的一些示例。
Stack Overflow用户
发布于 2014-09-04 14:07:26
尝尝这个
RuleFor(person => person).Must(person => !string.IsNullOrEmpty(person.FirstName) || !string.IsNullOrEmpty(person.LastName))Stack Overflow用户
发布于 2016-02-06 12:17:14
我这样做是为了检查输入的费用是否与前一项相同。如果收费和以前一样，就会出错。这对我有用。
public class CasualMealChargeValidator : AbstractValidator<CasualMealCharge>
{
public CasualMealChargeValidator(CasualMealCharge CMC)
{
//RuleFor(x => x.BankName).NotEmpty().When(pm => pm.PaymentMode == "Cheque").WithMessage("Enter Bank.");
RuleFor(x => x).Must(x => x.DN != CMC.DN || x.BF != CMC.BF || x.LN != CMC.LN).WithMessage("Not Saved - Meal charges are same as current charges.").WithName("CMFor");
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/21115179
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