不区分大小写与流畅验证的比较

Question

我在使用 Fluent Validations 实现不区分大小写的比较时失败了。我只是想比较两个电子邮件字段并忽略大小写。

当前的规则是：

RuleFor(x => x.EmailAddress).NotEmpty().Length(5, 200).EmailAddress();
RuleFor(x => x.ConfirmEmailAddress).NotEmpty().Equal(x => x.EmailAddress).WithMessage("Emails must match");

为了添加不区分大小写的要求，我考虑过使用 equal 调用传递比较器，但这似乎不起作用。

RuleFor(x => x.ConfirmEmailAddress).NotEmpty().Equal(x => x.EmailAddress, StringComparer.CurrentCultureIgnoreCase).WithMessage("Emails must match");

理想情况下，如果可能的话，我希望在客户端进行不区分大小写的比较。谁能提供有关如何完成此操作的指导？

我目前使用的NuGet包是：

<package id="FluentValidation" version="5.1.0.0" targetFramework="net45" />
<package id="FluentValidation.MVC4" version="5.1.0.0" targetFramework="net45" />

Answer 1

您可以使用 .Must() 扩展方法，同时接受父对象和属性的重载被验证如下：

RuleFor(x => x.ConfirmEmailAddress)
    .NotEmpty()
    .Must((x, confirmEmailAddress) => x.EmailAddress.Equals(confirmEmailAddress, StringComparison.OrdinalIgnoreCase))
    .WithMessage("Emails must match");

这仅在服务器端受支持，但是，根据 documentation:

Note that FluentValidation will also work with ASP.NET MVC's client-side validation, but not all rules are supported. For example, any rules defined using a condition (with When/Unless), custom validators, or calls to Must will not run on the client side. The following validators are supported on the client:

NotNull/NotEmpty

Matches (regex)

InclusiveBetween (range)

CreditCard

Email

EqualTo (cross-property equality comparison)

Length

不区分大小写与流畅验证的比较

Case Insensitive Compare with Fluent Validation

c#

string-comparison

fluentvalidation