c# - 来自 App 常量的流畅验证自定义检查

Question

如何验证 Status 是否存在于我的静态类中？

public static class AppConstants
{
    public static class FormStatus
    {
        public static string NEW = "New";
        public static string COMPLETE = "Complete";
        public static string DELETED = "Deleted";
    }
}

验证器类

public SetStatusCommandValidator(IApplicationDbContext context)
{
    _context = context;

    RuleFor(v => v.Status)
        .NotNull()
        .NotEmpty().WithMessage("Status is required.")
        .Must(???).WithMessage("Status is not a valid.");
}

基本上，如何验证状态值必须是 AppConstants.FormStatus 之一？

谢谢!

Answer 1

您可以在 Must 谓词中创建内联集合/数组并使用 .Contains:

RuleFor(v => v.Status)
    .NotNull()
    .NotEmpty().WithMessage(...)
    .Must(v => new [] { AppConstants.FormStatus.NEW, AppConstants.FormStatus.COMPLETE, AppConstants.FormStatus.DELETED }.Contains(v)).WithMessage(...);

或者，您可以向包含所有这些的 FormStatus 添加另一个属性:

public static class AppConstants
{
    public static class FormStatus
    {
        // Statuses here

        public static string[] ALL_STATUSES = new string[] { NEW, COMPLETE, DELETED };
    }
}

然后你的 Must 谓词就变成 Must(v => AppConstants.FormStatus.ALL_STATUSES.Contains(v)).WithMessage(...);

抱歉，如果语法不完全正确并且不能立即编译，我是在手机上编写的，无法仔细检查。