使用Fluent验证API和Mud Blazor时出现的奇怪错误

Question

对一些模型使用NotEqual规则的流畅验证，并在验证成功时得到一个奇怪的错误。我们的模型有两个字段，它们都是复杂的用户模型。他们之间不可能是一样的。当它们相同时，fluent验证器正确工作，并显示我的自定义错误消息。但是，当它们不一样时，不应该显示错误文本，这就是我所看到的：

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根本没什么意义。知道发生了什么事吗？

验证器类：

using FluentValidation;
using Data.Models.DBModels;

namespace Compyl.WebApp.Validators
{
    public class AssessmentModelFluentValidator : AbstractValidator<AssessmentModel>
    {
        public AssessmentModelFluentValidator()
        {
            RuleLevelCascadeMode = CascadeMode.Stop;
           
            
            RuleFor(x => x.Owner)
           
                .NotEqual(x=> x.DelegateOwner)
                .WithMessage("Owner cannot be the same as Delegate Owner")
                .NotEqual(X => X.Reviewer)
                .WithMessage("Owner cannot be the same as Reviewer");

            RuleFor(x => x.DelegateOwner)       
                .NotEqual(x => x.Owner)
                .WithMessage("Delegate Owner cannot be the same as Owner")
                .NotEqual(X => X.Reviewer)
                .WithMessage("Delegate Owner cannot be the same as Reviwer");



            RuleFor(x => x.Reviewer)
      
                .NotEqual(x => x.Owner)
                .WithMessage("Reviewer cannot be the same as Owner")
                .NotEqual(X => X.DelegateOwner)
                .WithMessage("Reviewer cannot be the same as Delegate Owner");


        }

        public Func<object, string, Task<IEnumerable<string>>> ValidateValue => async (model, propertyName) =>
        {
            var result = await ValidateAsync(ValidationContext<AssessmentModel>.CreateWithOptions((AssessmentModel)model, x => x.IncludeProperties(propertyName)));
            if (result.IsValid)
                return Array.Empty<string>();
            return result.Errors.Select(e => e.ErrorMessage);
        };
    }
}

表格的一部分：

<MudForm  @ref="form" Model="@assessment" @bind-IsValid="@success"  Validation="@(assessmentValidator.ValidateValue)" @bind-Errors="@errors">
  <MudCard Elevation="0">
     <MudCardHeader>
         <CardHeaderContent>
             <MudText Typo="Typo.h6">@assessment.Name</MudText>
              <MudText>@assessment.Description</MudText>
          </CardHeaderContent>
                    
       </MudCardHeader>
       <MudCardContent>
        <MudTabs Elevation="2" Rounded="true" ApplyEffectsToContainer="true" PanelClass="pa-6">
            <MudTabPanel Text="Assessment Details">
                  <MudTextField  Immediate="true" For="@(() => assessment.Name)"  Variant="Variant.Outlined" Disabled="@(!canEdit)" RequiredError="Assessment Name is Required!"  Required Label="Name" @bind-Value="assessment.Name" />
                   <MudTextField  For="@(() => assessment.Description)"  Variant="Variant.Outlined"  Disabled="@(!canEdit)" Lines="4" Label="Description" @bind-Value="assessment.Description" />
                   <MudAutocomplete   Immediate="true" For="@(() => assessment.Owner)" Variant="Variant.Outlined"  Disabled="@(!canEdit)" T="UserModel"  @bind-Value="assessment.Owner" RequiredError="Assessment Owner is Required!" Required Label="Owner"   ToStringFunc="@(e=> e==null? null : $"{e.Email}")" SearchFunc="@SearchUsers" />
                 <MudAutocomplete  Immediate="true" For="@(() => assessment.DelegateOwner)" Variant="Variant.Outlined" Disabled="@(!canEdit)" T="UserModel"  @bind-Value="assessment.DelegateOwner" Label="Delegate Owner" ToStringFunc="@(e=> e==null? null : $"{e.Email}")" SearchFunc="@SearchUsers" />
                  <MudAutocomplete  Immediate="true" For="@(() => assessment.Reviewer)" Variant="Variant.Outlined" Disabled="@(!canEdit)" T="UserModel" @bind-Value="assessment.Reviewer" RequiredError="Assessment Reviewer is Required!" Required Label="Reviewer"  ToStringFunc="@(e=> e==null? null : $"{e.Email}")" SearchFunc="@SearchUsers" />

Answer 1

不能将对象与流畅验证进行比较。你必须比较个别的属性。在这种情况下，比较ID (我猜是属性名)是有意义的。

RuleFor(x => x.Reviewer.Id)
    .NotEqual(x => x.Owner.Id)
    .WithMessage("Reviewer cannot be the same as Owner")
    .NotEqual(X => X.DelegateOwner.Id)
    .WithMessage("Reviewer cannot be the same as Delegate Owner");

Answer 2

这在一定程度上是Bron在评论中的回答，但也与MudBlazor的“不处理”复杂对象的“原因”有关。解决方法是将复杂模型的ID绑定到字段，而不是整个模型。这样，您可以为ID设置规则和for语句。