Question

我在验证器中有以下代码：

RuleFor(mb => mb.Amount).
Must((mb, amount) =>
                {
                   var betLimit = _battlesService.GetBetLimit(mb.BattleId);

                   mb.Amount <= betLimit;
                }).
WithMessage("Bet should be less than {0}", "bet limit value should be placed here");

有没有办法将betLimit值传递给WithMessage方法？我看到的唯一解决方案是将betLimit值设置为ViewModel的某个属性，然后使用funcs在WithMessage重载中访问它。但它很难看。

Answer 1

由于Amount未用于获取betLimit，因此当您的验证器启动时，您是否无法将投注限制拉入某个字段，并在您想要的任何地方使用它？类似的东西：

public ViewModelValidator(IBattlesService battlesService)
{
    var betLimit = battlesService.GetBetLimit();

    RuleFor(mb => mb.Amount).
    Must((mb, amount) =>
                    {
                       mb.Amount <= betLimit;
                    }).
    WithMessage(string.Format("Bet should be less than {0}", "bet limit value should be placed here", betLimit));
    ...
}

<强>更新

我现在看到你从视图模型中添加了param。根据FluentValidation文档here中的第三个示例，看起来您应该可以这样做：

    public ViewModelValidator(IBattlesService battlesService)
    {
        RuleFor(mb => mb.Amount).
        Must((mb, amount) =>
                        {
                           mb.Amount <= betLimit;
                        }).
        WithMessage("Bet should be less than {0}", mb => battlesService.GetBetLimit(mb.BattleId));
        ...
    }

FluentValidation将参数传递给WithMessage

1 个答案: