c# - FluentValidation:更新验证器内部一些可选属性的验证模型

Question

我想知道是否可以在 FluentValidations 验证器中为一些可选参数更新验证模型，以防这些参数无效？

这是一些代码:

public class Customer
{
    public string FirstName { get; set; }
    public string MiddleName { get; set; }
    public string LastName { get; set; }
}

public class CustomerValidator : AbstractValidator<Customer>
{
    public CustomerValidator()
    {
        RuleFor(customer => customer.FirstName).NotNull().Length(5, 100);
        RuleFor(customer => customer.LastName).NotNull().Length(5, 100);
        RuleFor(customer => customer.MiddleName).Length(5, 100).When(c => string.IsNullOrWhiteSpace(c.MiddleName));
    }
}

我是这样使用它的:

        Customer customer = new Customer { FirstName = "first name", LastName = "last name" };
        CustomerValidator validator = new CustomerValidator();

        var result = validator.Validate(customer);

        Console.WriteLine(result.IsValid);

所以在我的例子中，我想在中间名无效时将其设置为 null，并在变量中保存警告，但仍将模型视为有效。

Answer 1

更新传递给验证的对象不是一个好主意，Validator 应该只验证输入实体，并返回验证结果，仅此而已。我建议你有两个验证器。一个用于业务关键规则，一个用于警告，因此如果第一个验证器返回该模型无效，您将返回结果，如果没有严重错误，则您将验证警告，然后您可以决定是否继续操作您的模型! 例如

    public class Customer
{
    public string FirstName { get; set; }
    public string MiddleName { get; set; }
    public string LastName { get; set; }
}

public class CustomerCriticalValidator : AbstractValidator<Customer>
{
    public CustomerValidator()
    {
        RuleFor(customer => customer.FirstName).NotNull().Length(5, 100);
        RuleFor(customer => customer.LastName).NotNull().Length(5, 100);
    }
}

public class CustomerWarningValidator : AbstractValidator<Customer>
{
    public CustomerValidator()
    {

        RuleFor(customer => customer.MiddleName).Length(5, 100).When(c => string.IsNullOrWhiteSpace(c.MiddleName));
    }
}

然后在代码中

            Customer customer = new Customer();

        CustomerCriticalValidator criticalValidator = new CustomerCriticalValidator();

        CustomerWarningValidator warningValidator = new CustomerWarningValidator();

        var validationResult = criticalValidator.Validate(customer);
        if (validationResult.IsValid)
        {
            var result = warningValidator.Validate(customer);
            if (!result.IsValid)
            {
                //DO what you need with customer    
            }

        }