Question

我使用了Fluent Validator。但有时我需要创建一个规则层次结构。例如：

[Validator(typeof(UserValidation))]
public class UserViewModel
{
    public string FirstName;
    public string LastName;
}

public class UserValidation : AbstractValidator<UserViewModel>
{
    public UserValidation()
    {
        this.RuleFor(x => x.FirstName).NotNull();
        this.RuleFor(x => x.FirstName).NotEmpty();

        this.RuleFor(x => x.LastName).NotNull();
        this.RuleFor(x => x.LastName).NotEmpty();
    }
}

public class RootViewModel : UserViewModel
{
    public string MiddleName;       
}

我想从UserValidation继承验证规则到RootValidation。但是这段代码不起作用：

public class RootViewModelValidation:UserValidation<RootViewModel>
{
    public RootViewModelValidation()
    {
        this.RuleFor(x => x.MiddleName).NotNull();
        this.RuleFor(x => x.MiddleName).NotEmpty();
    }
}

如何使用FluentValidation继承验证类？

Answer 1

要解决此问题，您必须将UserValidation类更改为generic。请参阅下面的代码。

public class UserValidation<T> : AbstractValidator<T> where T : UserViewModel
{
    public UserValidation()
    {
        this.RuleFor(x => x.FirstName).NotNull();
        this.RuleFor(x => x.FirstName).NotEmpty();

        this.RuleFor(x => x.LastName).NotNull();
        this.RuleFor(x => x.LastName).NotEmpty();
    }
}

[Validator(typeof(UserValidation<UserViewModel>))]
public class UserViewModel
{
    public string FirstName;
    public string LastName;
}

public class RootViewModelValidation : UserValidation<RootViewModel>
{
    public RootViewModelValidation()
    {
        this.RuleFor(x => x.MiddleName).NotNull();
        this.RuleFor(x => x.MiddleName).NotEmpty();
    }
}

[Validator(typeof(RootViewModelValidation))]
public class RootViewModel : UserViewModel
{
    public string MiddleName;
}

流畅的验证。继承验证类

1 个答案: