FluentValidation在输入属性为对象列表时不验证List<string>。

huangapple
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英文:

FluentValidation does not validate List<string> when input property is List of objects

问题

I have the following model (simplified for brevity):

  1. {
  2.     public List&lt;string&gt; Values { get; set; }
  3. }

Then my ApiController as following:

  1. public AdvancedFilter Test(List&lt;AdvancedFilter&gt; filters)
  2. {
  3.     return filters.First();
  4. }

Now my Validator looks as following:

  1. {
  2.     public AdvancedFilterValidator()
  3.     {
  4.         RuleFor(x =&gt; x.Values).NotEmpty().ForEach(x =&gt; x.MinimumLength(20));
  5.         //RuleForEach(x =&gt; x.Values).MinimumLength(20); (tried both approaches, none of them worked for me)
  6.     }
  7. }

When I try to call my endpoint with invalid payload such as

  1. [
  2.   {
  3.      &quot;values&quot;:[&quot;test&quot;]
  4.   }
  5. ]

It does not throw a Validation exception back at me. Interestingly enough, when I change my controller to accept just a single object like this, the Fluent Validation suddenly kicks in as expected.

  1. [HttpPost(&quot;test&quot;)]
  2. public AdvancedFilter Test(AdvancedFilter filters)
  3. {
  4.     return filters;
  5. }

I am using ASP Net Core v 6 with FluentValidation.AspNetCore version "11.3.0" (latest).

Bonus question:
My end goal with this validation is to ensure that all input values are numbers (even though they are strings, for certain cases I need to make sure they are int). The expanded model would shed more light on it (still simplified):

  1. {
  2.     public AdvancedFilterColumn Column { get; set; }
  3.     public List&lt;string&gt; Values { get; set; }
  4. }
  6. public class AdvancedFilterValidator : AbstractValidator&lt;AdvancedFilter&gt;
  7. {
  8.     public AdvancedFilterValidator()
  9.     {
  10.         When(x =&gt; x.Column == AdvancedFilterColumn.Jurisdiction, () =&gt;
  11.         {
  12.             RuleForEach(x =&gt; x.Values).Must(x =&gt; int.TryParse(x, out _));
  13.         });
  14.     }
  15. }

As you can see, for a specific case when Column is Jurisdiction, I need to make sure that passed-in values are all numbers. I believe the validation rule is written correctly, yet I cannot test it (due to the above-mentioned problem).

Any help in respect to this matter would be highly appreciated.

英文:

I have the following model (simplified for brevity)

  1. public class AdvancedFilter
  2. {
  3.     public List&lt;string&gt; Values { get; set; }
  4. }

Then my ApiController as following

  1.     [HttpPost(&quot;test&quot;)]
  2.     public AdvancedFilter Test(List&lt;AdvancedFilter&gt; filters)
  3.     {
  4.         return filters.First();
  5.     }

Now my Validator looks as following

  1. public class AdvancedFilterValidator : AbstractValidator&lt;AdvancedFilter&gt;
  2. {
  3.     public AdvancedFilterValidator()
  4.     {
  5.         RuleFor(x =&gt; x.Values).NotEmpty().ForEach(x =&gt; x.MinimumLength(20));
  6.         //RuleForEach(x =&gt; x.Values).MinimumLength(20); (tried both approaches, none of them worked for me)
  7.     }
  8. }

When I try to call my endpoint with invalid paylaod such as

  1. [
  2.   {
  3.      &quot;values&quot;:[&quot;test&quot;]
  4.   }
  5. ]

It does not throw Validation exception back at me. Interestingly enough, when I change my controller to accept just a single object like this, the fluent validation suddenly kicks in as expected.

  1.     [HttpPost(&quot;test&quot;)]
  2.     public AdvancedFilter Test(AdvancedFilter filters)
  3.     {
  4.         return filters;
  5.     }

I am using ASP Net Core v 6 with FluentValidation.AspNetCore version "11.3.0" (latest)

Bonus question:
My end goal with this validation is to have ensure that all input values are numbers (even though they are strings, for certain cases I need to make sure they are int). Expanded model would shine more light to it (still simplified)

  1. public class AdvancedFilter
  2. {
  3.     public AdvancedFilterColumn Column { get; set; }
  4.     public List&lt;string&gt; Values { get; set; }
  5. }
  7. public class AdvancedFilterValidator : AbstractValidator&lt;AdvancedFilter&gt;
  8. {
  9.     public AdvancedFilterValidator()
  10.     {
  11.         When(x =&gt; x.Column == AdvancedFilterColumn.Jurisdiction, () =&gt;
  12.         {
  13.             RuleForEach(x =&gt; x.Values).Must(x =&gt; int.TryParse(x, out _));
  14.         });
  15.     }
  16. }

As you can see for specific case, when Column is Jurisdiction I need to make sure that passed in values are all numbers. I believe the validation rule is written correctly, yet I cannot test it (due to abovementioned problem).

Any help in respect to this matter would be highly appreciated.

答案1

得分: 0

  1. Think that you need to build a validator for validating the `AdvancedFilter` collection.
  3. public class AdvancedFilterCollectionValidator : AbstractValidator<IEnumerable<AdvancedFilter>>
  4. {
  5.     public AdvancedFilterCollectionValidator()
  6.     {
  7.         RuleForEach(x => x).SetValidator(new AdvancedFilterValidator());
  8.     }
  9. }

And register the validator service in the ConfigureServices method.

  1. public void ConfigureServices(IServiceCollection services) 
  2. {
  3.     services.AddMvc();
  5.     // Other configurations
  7.     services.AddScoped<IValidator<AdvancedFilter>, AdvancedFilterValidator>();
  8.     services.AddScoped<IValidator<IEnumerable<AdvancedFilter>>, AdvancedFilterCollectionValidator>();
  9. }

Reference: Validation for a for Collection of a type at Root level?

  2. <details>
  3. <summary>英文:</summary>
  5. Think that you need to build a validator for validating the `AdvancedFilter` collection.
  7. ```csharp
  8. public class AdvancedFilterCollectionValidator : AbstractValidator&lt;IEnumerable&lt;AdvancedFilter&gt;&gt;
  9. {
  10.     public AdvancedFilterCollectionValidator()
  11.     {
  12.         RuleForEach(x =&gt; x).SetValidator(new AdvancedFilterValidator());
  13.     }
  14. }

And register the validator service in the ConfigureServices method.

  1. public void ConfigureServices(IServiceCollection services) 
  2. {
  3.     services.AddMvc();
  5.     // Other configurations
  7.     services.AddScoped&lt;IValidator&lt;AdvancedFilter&gt;, AdvancedFilterValidator&gt;();
  8.     services.AddScoped&lt;IValidator&lt;IEnumerable&lt;AdvancedFilter&gt;&gt;, AdvancedFilterCollectionValidator&gt;();
  9. }

Reference: Validation for a for Collection of a type at Root level?

huangapple
  • 本文由 发表于 2023年3月31日 02:48:17
  • 转载请务必保留本文链接：https://go.coder-hub.com/75891931.html
  • asp.net-core
  • asp.net-core-webapi
  • c#
  • fluentvalidation
  • validation
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