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No service for type 'Microsoft.Extensions.Localization.IStringLocalizer`1[MyProject.Localization.MyProjectResource]' has been registered. #4146


User avatar
1
ageiter created
  • ABP Framework version: v6.0.1
  • UI type: Blazor Server
  • DB provider: EF Core
  • Exception message and stack trace: No service for type 'Microsoft.Extensions.Localization.IStringLocalizer`1[MyProject.Localization.MyProjectResource]' has been registered.

This is actually the same question as @balessi75 has already asked here: #3862

I want to use my string resources in a DTO (MyProject.Application.Contracts).

public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
{
    var results = new List<ValidationResult>();
    var l = validationContext.GetRequiredService<IStringLocalizer<MyProjectResource>>();
    var errorMessage = l["Entity:DocumentType:IsRequired:ValidationText"].Value;
    
    ...
    
    return results;
}

Unfortunately, I have not figured out how to register the IStringLocalizer correctly. I have read the mentioned documentation and searched for it, but somehow it doesn't work for me. I always get the following error message:

Unhandled exception rendering component: No service for type 'Microsoft.Extensions.Localization.IStringLocalizer`1[MyProject.Localization.MyProjectResource]' has been registered.
System.InvalidOperationException: No service for type 'Microsoft.Extensions.Localization.IStringLocalizer`1[MyProject.Localization.MyProjectResource]' has been registered.
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
   at MyProject.Shared.DocumentDependentBase.Validate(ValidationContext validationContext) in 

Can you tell me how to register it in my module?


10 Answer(s)
  • User Avatar
    0
    maliming created
    Support Team Fullstack Developer

    hi

    Can you share a project to reproduce the problem? liming.ma@volosoft.com

  • User Avatar
    0
    ageiter created

    I wanted to make an example project, but there it works. I haven't figured out where the difference is and why it doesn't work in my other project...

  • User Avatar
    0
    maliming created
    Support Team Fullstack Developer

    I also have no idea.

  • User Avatar
    0
    ageiter created

    I have now been able to recreate the problem in a test project. I have emailed you the OneDrive download link for the test project.

    In order for you to reproduce this, you need to create and save a new test element in my project.

    I use the ObjectGraphDataAnnotationsValidator to validate a more complex object (doesn't make sense in the example, of course, but I had to include it since it's probably part of the problem).

    Tests.razor (sorry, I had to change the HTML code so I could paste it here):

    < EditForm id="CreateTestForm" EditContext="NewTestDataContext">
                
        < ObjectGraphDataAnnotationsValidator />
    
        < ModalHeader>
            < ModalTitle>@L["NewTest"]</ModalTitle>
            < CloseButton Clicked="CloseCreateTestModalAsync" />
        < /ModalHeader>
        < ModalBody>
    
            < Validation>
                < Field>
                    < FieldLabel>@L["DocumentName"]</FieldLabel>
                    < TextEdit @bind-Text="@NewTest.Document.DocumentName">
                        < Feedback>
                            < ValidationError />
                        < /Feedback>
                    < /TextEdit>
                < /Field>
                < ValidationMessage For="() => NewTest.Document.DocumentValidation"></ValidationMessage>
            < /Validation>
    
        < /ModalBody>
        < ModalFooter>
            < Button Color="Color.Secondary" Clicked="CloseCreateTestModalAsync">
                @L["Cancel"]
            < /Button>
            < SubmitButton Form="CreateTestForm" Clicked="CreateTestAsync" />
        < /ModalFooter>
    < /EditForm>
    

    When validating DocumentDto.cs the error happens:

    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
    {
        var results = new List<ValidationResult>();
    
        // This is not working when using EditContext !!!
        var l = validationContext.GetRequiredService<IStringLocalizer<Abp4146Resource>>(); 
        var errorMessage = l["Test:ValidationMessage"].Value;
    
        // Do some validation
    
        results.Add(new ValidationResult(errorMessage, new[] { nameof(DocumentValidation) }));
        
        return results;
    }
    

    Exception: System.InvalidOperationException: 'No service for type 'Microsoft.Extensions.Localization.IStringLocalizer`1[Abp4146.Localization.Abp4146Resource]' has been registered.'

    What I found out: If I don't use the EditContext for the EditForm, but the model, then it works. But in my concrete project I need the EditContext...

    This is working: &lt;EditForm id=&quot;CreateTestForm&quot; Model=&quot;@NewTest&quot;&gt; This is NOT working: &lt;EditForm id=&quot;CreateTestForm&quot; EditContext=&quot;NewTestDataContext&quot;&gt;

  • User Avatar
    0
    maliming created
    Support Team Fullstack Developer

    hi

    For blazor

    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
    {
        var results = new List<ValidationResult>();
    
        // This is not working when using EditContext !!!
        var l = validationContext.GetService<IStringLocalizer<Abp4146Resource>>();
        if (l != null)
        {
            var errorMessage = l["Test:ValidationMessage"].Value;
    
            // Do some validation
    
            results.Add(new ValidationResult(errorMessage, new[] { nameof(DocumentValidation) }));
        }
    
        return results;
    }
    
  • User Avatar
    0
    ageiter created

    What does that mean exactly? It is not possible with Blazor? If yes, why? Or you have found a bug that you are going to fix?

    Because for me your "solution" means that I can't output multilingual validation messages.

  • User Avatar
    0
    maliming created
    Support Team Fullstack Developer

    hi

    This line doesn't set the ServiceProvider of ValidationContext

    if (NewTestDataContext.Validate() == false)
    {
        return;
    }
    
  • User Avatar
    0
    ageiter created

    hi

    This line doesn't set the ServiceProvider of ValidationContext

    if (NewTestDataContext.Validate() == false) 
    { 
        return; 
    } 
    

    I know that, but it would be interesting to know how I would have to do it... setting the ServiceProvider.

  • User Avatar
    0
    maliming created
    Support Team Fullstack Developer

    You can't. : ( This is designed by blazor.

  • User Avatar
    0
    ageiter created

    Ok, I have now applied a workaround to solve the problem.

Made with ❤️ on ABP v9.1.0-preview. Updated on December 02, 2024, 12:35