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• When you mock repositories or app services in ABP unit tests (especially to avoid using SQLite due to unsupported EF Core mappings), dependencies like Logger, CurrentUser, CurrentTenant, and CurrentUnitOfWork are not automatically injected and will be null unless explicitly provided.

To resolve this, you should manually provide these dependencies in your test setup. ABP provides default/fake implementations for these services, which you can register in your test module or test setup. Here’s how you can do it:

public class MyAppServiceTests
{
    private readonly MyAppService _appService;

    public MyAppServiceTests()
    {
        var logger = Substitute.For<ILogger<MyAppService>>();
        var currentUser = Substitute.For<ICurrentUser>();
        var currentTenant = Substitute.For<ICurrentTenant>();
        var currentUnitOfWork = Substitute.For<ICurrentUnitOfWork>();

        _appService = new MyAppService(
            /* your mocked repository */,
            logger,
            currentUser,
            currentTenant,
            currentUnitOfWork
            // ...other dependencies
        );
    }

    [Fact]
    public void Test_Something()
    {
        // Arrange/Act/Assert
    }
}

Alternatively, if you use ABP’s dependency injection in your test base, you can register these as singletons or use ABP’s built-in fake services:

protected override void BeforeAddApplication(IServiceCollection services)
{
    services.AddSingleton(Substitute.For<ILogger<MyAppService>>());
    services.AddSingleton(Substitute.For<ICurrentUser>());
    services.AddSingleton(Substitute.For<ICurrentTenant>());
    services.AddSingleton(Substitute.For<ICurrentUnitOfWork>());
    base.BeforeAddApplication(services);
}

This ensures that when your AppService is resolved, all these dependencies are injected and not null.

• For more details, see the official documentation on ABP unit testing:

Sources

• https://abp.io/docs/latest/testing/unit-tests

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To enable the Idle Session Timeout feature in your ABP Web Public App (MVC/Razor, ABP 9.2.0), follow these steps:

1. Ensure you have referenced the correct package:

   • Volo.Abp.Account.Pro.Public.Web.Shared (as you already did).

2. Add the module dependency in your module class:

[DependsOn(typeof(Volo.Abp.Account.Pro.Public.Web.Shared.AbpAccountProPublicWebSharedModule))]
   public class YourWebPublicModule : AbpModule
   {
       // ...
   }

3. Enable and configure Idle Session Timeout in the UI:

   • Go to Settings > Account > Idle Session Timeout in your application.
   • Enable the feature and set the desired timeout value (in minutes).

4. Behavior:

   • When the idle session timeout is reached, the user will see a warning modal.
   • If the user does not respond within 60 seconds, they will be logged out automatically.

5. Note:

   • If the user selects "Remember Me" on the login page, the idle session timeout feature will be disabled for that session.

No additional code configuration is required beyond referencing the package, adding the module dependency, and enabling the feature in the settings UI.

Sources:

• https://abp.io/docs/latest/modules/account/idle-session-timeout

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To enable EF Core's lazy loading with UseLazyLoadingProxies, all navigation properties (including collections) must be marked as virtual and must have a discoverable backing field. The error you encountered:

InvalidOperationException: No backing field was found for property 'Tenant.ConnectionStrings'. Lazy-loaded navigations must have backing fields.

indicates that the ConnectionStrings property on the Tenant entity does not have a proper backing field, which is required for lazy loading proxies to work.

Solution

1. Backing Field Requirement:
   EF Core's lazy loading requires that navigation properties (including collections) have a backing field. If the property is auto-implemented or does not follow EF Core's naming conventions for backing fields, you must explicitly define and configure the backing field.

2. How to Fix:

   • Update the Tenant entity to define a private backing field for ConnectionStrings.
   • Mark the navigation property as virtual.
   • Configure the backing field in your OnModelCreating method using the Fluent API.

Example

public class Tenant : AggregateRoot<Guid>
{
    private List<TenantConnectionString> _connectionStrings = new List<TenantConnectionString>();

    public virtual ICollection<TenantConnectionString> ConnectionStrings
    {
        get => _connectionStrings;
        protected set => _connectionStrings = (List<TenantConnectionString>)value;
    }
}

And in your DbContext:

protected override void OnModelCreating(ModelBuilder builder)
{
    base.OnModelCreating(builder);

    builder.Entity<Tenant>()
        .HasMany(typeof(TenantConnectionString), "_connectionStrings")
        .WithOne()
        .HasForeignKey("TenantId");

    builder.Entity<Tenant>()
        .Navigation(e => e.ConnectionStrings)
        .UsePropertyAccessMode(PropertyAccessMode.Field);
}

This ensures EF Core can find and use the backing field for lazy loading.

3. If You Cannot Change the Entity:
   If the Tenant entity comes from a NuGet package or ABP module and you cannot modify it directly, you will not be able to use lazy loading for that property. In this case, you must either:

   • Avoid enabling lazy loading for the entire context, or
   • Exclude the problematic entity from lazy loading and use explicit loading for its navigation properties.

4. General Recommendation:
   Lazy loading is powerful but can introduce subtle bugs and performance issues. Consider using explicit loading (Include) or eager loading (WithDetailsAsync) for better control, especially in modular or layered ABP solutions.

References

• ABP EF Core Integration & Lazy Loading

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• The 403 Forbidden error when accessing the Log Management (Audit Logging Settings) page in ABP usually means the current user does not have the required permission to access the endpoint (/api/audit-logging/settings/global).
• This is not related to your service override; the request is blocked before your service is called due to authorization.

How to resolve:

1. Check Permissions:

   • Ensure the user/role has the AuditLogging.Settings or similar permission. In ABP, access to settings pages is controlled by permissions.
   • Go to Administration → Identity Management → Roles, select the relevant role (e.g., admin), and ensure the permission for Audit Logging Settings is granted.

2. Multi-Tenancy:

   • If you are using a tiered setup, make sure you are logged in as the correct tenant or host. Some settings are only available to the host.

3. Token/Claims:

   • The error message insufficient_access indicates the access token does not have the required claims. Make sure you are logged in with a user that has the correct permissions and that the token is refreshed after permission changes.

4. Custom Permissions:

   • If you have customized permissions or overridden the default permission provider, ensure the permission name matches what the UI expects.

5. Restart & Cache:

   • After changing permissions, log out and log in again, and clear any distributed cache (e.g., Redis) if used.

Reference Implementation:

• Official ABP Audit Logging documentation:
  • https://abp.io/docs/latest/audit-logging

Summary:
Grant the required permission to the user/role for accessing Audit Logging Settings. The 403 error is an authorization issue, not a service override problem.

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No, Hangfire is not multi-tenant aware by default in ABP Framework. When you define a recurring job like your HourlyBackgroundWorker, it will run once per schedule for the entire application, not once per tenant. This means the job executes globally, not per tenant, unless you explicitly implement logic to iterate over tenants and perform actions within each tenant's context.

If you want the job to run separately for each tenant, you need to manually enumerate all tenants and use ICurrentTenant.Change(tenantId) to execute tenant-specific logic inside your DoWorkAsync method. Here is a simplified example:

public override async Task DoWorkAsync(CancellationToken cancellationToken = default)
{
    var tenantRepository = LazyServiceProvider.LazyGetRequiredService<ITenantRepository>();
    var currentTenant = LazyServiceProvider.LazyGetRequiredService<ICurrentTenant>();

    var tenants = await tenantRepository.GetListAsync();

    foreach (var tenant in tenants)
    {
        using (currentTenant.Change(tenant.Id))
        {
            // Your tenant-specific logic here
            await _feedbackFilesUpdaterService.UpdateAllFeedbacksAsync();
        }
    }
}

This approach ensures the job runs for each tenant context.

Sources:

• Validated: ABP Hangfire Background Worker Integration

This approach aligns with common ABP multi-tenancy conventions, but specific official documentation for this exact scenario is not available.

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To integrate a separate DDD module with the host application while utilizing a shared database context in ABP Framework, you should implement the following approach:

1. Implement Shared DbContext Interface
   Define a common interface that both the host application and the module can implement for the shared entities.

public interface ISharedDbContext : IEfCoreDbContext
   {
       DbSet<YourEntity> YourEntities { get; set; }
       // Add other shared DbSets here
   }

2. Module DbContext Implements Shared Interface
   In your module, have the module's DbContext implement the shared interface.

public class ModuleDbContext : AbpDbContext<ModuleDbContext>, ISharedDbContext
   {
       public DbSet<YourEntity> YourEntities { get; set; }
       // Other module-specific DbSets
   }

3. Host Application DbContext Implements Shared Interface
   In the host application, have the main DbContext also implement the shared interface and include the module's entities.

public class HostDbContext : AbpDbContext<HostDbContext>, ISharedDbContext
   {
       public DbSet<YourEntity> YourEntities { get; set; }
       // Other host-specific DbSets
   }

4. Register Repositories for Shared Entities
   In the host application, register the repository for the module's entities using the host application's DbContext.

context.Services.AddAbpDbContext<HostDbContext>(options =>
   {
       options.AddDefaultRepositories(includeAllEntities: true);
       options.AddRepository<YourEntity, YourEntityRepository>();
   });

5. Use the Host DbContext for Both Host and Module
   When running in the host application, ensure that the module uses the host application's DbContext for all operations. This allows both the host and the module to work with the same database context and tables.

6. Dependency Injection
   Inject the repository or DbContext as needed in your application or module services.

public class YourAppService : ApplicationService
   {
       private readonly IRepository<YourEntity, Guid> _yourEntityRepository;

       public YourAppService(IRepository<YourEntity, Guid> yourEntityRepository)
       {
           _yourEntityRepository = yourEntityRepository;
       }

       // Use _yourEntityRepository for CRUD operations
   }

This approach ensures that both the host application and the module operate on the same database context and tables, maintaining consistency and enabling seamless integration.

Sources:

• Configuring Multiple DbContexts in an ABP Framework Project
• ABP Module System
• Entity Framework Core Integration

If you need to see a full working example, refer to the official documentation and community articles linked above.

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• After upgrading both the front-end and back-end to ABP 9.2.3, a login redirect loop typically indicates a misconfiguration or incompatibility in authentication, especially in tiered or separated Auth Server setups.

To resolve this issue, follow these steps:

1. Check Migration Guide
   Review and apply all steps in the official ABP 9.2 migration guide, as there are breaking changes that may affect authentication and token handling:

   • ABP Version 9.2 Migration Guide

2. Certificate Synchronization
   If you are using OpenIddict, ensure that the openiddict.pfx certificate and its passphrase are identical and present in both the AuthServer and the API Host. A mismatch or missing certificate can cause token validation failures, resulting in redirect loops.

3. Check for SecurityTokenSignatureKeyNotFoundException
   In similar cases, a SecurityTokenSignatureKeyNotFoundException (IDX10503) due to a kid mismatch between AuthServer and backend was the root cause. Regenerate and synchronize the certificate if needed.

4. Update All Packages
   Make sure all ABP NuGet and NPM packages are updated to 9.2.3 in both backend and frontend projects. Mixed versions can cause authentication issues.

5. Clear Browser Cache and Cookies
   After upgrade, old cookies or tokens may cause issues. Clear them before testing.

6. Check Application Configuration

   • Ensure the Authority, ClientId, and Scopes in your Angular environment and backend match the AuthServer configuration.
   • Verify that the allowed scopes and grant types are correctly set for your client in the OpenIddict data seed.

7. Review Deployment Environment
   If running behind IIS or a reverse proxy, ensure forwarded headers are configured correctly. See:

   • Microsoft Docs: Forwarded Headers Middleware

8. Check for Errors in Browser Console and Network Tab
   Look for failed requests or error messages during the login process, especially to /connect/authorize, /connect/token, or /api/abp/application-configuration.

If you have recently cloned or deployed the project, ensure the openiddict.pfx file is not missing (it is git-ignored by default and must be copied manually).

If the above steps do not resolve the issue, consult the following resolved support ticket for a similar scenario:

• ABP Support: Infinite Redirect Loop due to Certificate Mismatch

Sources:

• ABP Version 9.2 Migration Guide
• ABP Support: Infinite Redirect Loop due to Certificate Mismatch
• Getting Started with ABP

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To create and use a new LeptonX theme or customize the color schema for a Blazor Hybrid app, follow these steps:

1. Create a New LeptonX Theme

• Copy the existing LeptonX theme folder (typically under wwwroot/themes/lepton-x or similar) to a new folder, e.g., wwwroot/themes/leptonx-custom.
• Rename the theme files and update references inside the files to use your new theme name (e.g., replace lepton-x with leptonx-custom).

2. Update or Create SCSS/CSS Files

• Edit or create SCSS/CSS files in your new theme folder.
• To change primary, secondary, and other colors, locate the variables section (often in a file like _variables.scss or similar) and update values:

$primary: #your-primary-color;
  $secondary: #your-secondary-color;
  $background: #your-background-color;

• For background color in dark mode, override the relevant CSS variable or class:

body.lpx-dark {
    background-color: #6B4F28; /* Example brown */
  }

3. Reference the New Theme in Your Project

• In your Blazor project, update the theme reference in the Program.cs or Startup.cs (or wherever the theme is configured):

builder.Services.Configure<LeptonXThemeOptions>(options =>
  {
      options.DefaultStyle = "custom"; // Use your new style name
  });

• Ensure your new theme's CSS is included in the project and loaded by the app (add to _Host.cshtml or index.html as needed).

4. Register and Use the Theme

• If your theme introduces a new style (e.g., "custom"), register it in the theme options or via dependency injection so the app recognizes it.

5. Other Vital Information

• Make sure all assets (images, fonts, etc.) referenced in your theme are present in the new theme folder.
• If you want to support switching between multiple styles, implement a style switcher in your UI and update the theme dynamically.

Secondary: Change Only the Color Schema

• To only change colors (primary, secondary, background), override the relevant CSS variables in a custom CSS file and include it after the default LeptonX CSS.
• For example, in wwwroot/css/custom-leptonx-overrides.css:

:root {
    --lpx-primary: #your-primary-color;
    --lpx-secondary: #your-secondary-color;
  }
  body.lpx-dark {
    background-color: #6B4F28; /* Brown for dark mode */
  }

• Add this file to your Blazor app's layout so it loads after the main theme.

This approach aligns with common ABP conventions, but specific official documentation for this exact scenario is not available.

Sources

• Validated: LeptonX Lite Theme Overview

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To enable and configure the user time zone setting in ABP, you need to use the Abp.Timing.TimeZone setting, which can be set per user, tenant, or globally. By default, the time zone dropdown is not shown on the user profile page unless you enable and configure this feature.

Here's how you can enable and use the user time zone setting:

1. Enable Time Zone Setting:
   • Make sure your solution is using ABP version 7.4 or later, as the time zone setting feature is available from this version.
   • In your module configuration, set the clock kind to UTC:

Configure<AbpClockOptions>(options =>
     {
         options.Kind = DateTimeKind.Utc;
     });

2. Show Time Zone Dropdown in UI:

   • The time zone dropdown is available in the Account Pro module. If you are using the open-source edition, you may need to implement your own dropdown or upgrade to the commercial version.
   • For the commercial Account Pro module, users can set their own time zone in the account settings page, and the setting will be stored as Abp.Timing.TimeZone.

3. Read the User's Time Zone Setting:

   • You can read the user's time zone setting using the setting provider:

var userTimeZone = await SettingProvider.GetOrNullAsync(TimingSettingNames.TimeZone);

• Use the IClock service to convert between UTC and the user's local time:

var userTime = Clock.ConvertToUserTime(utcDateTime);

4. Documentation and References:
   • For more details, see the official documentation and a full example:
     • https://abp.io/docs/latest/framework/infrastructure/timing
     • https://abp.io/community/articles/zk7fnrdq

If you do not see the time zone dropdown, ensure you have enabled the feature in your settings and are using the correct ABP modules. For open-source, you may need to add a custom dropdown and save the setting using the ABP setting system.

Sources:

• https://abp.io/docs/latest/framework/infrastructure/timing
• https://abp.io/community/articles/zk7fnrdq

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• When you create a new user via the admin UI in ABP, the user is registered in the ABP identity system, but there is no external login mapping (such as Azure AD) in the AbpUserLogins table for that user. When the user attempts to log in via Azure AD SSO, ABP tries to find a user with a matching external login (provider key and provider name). If it doesn't find one, it treats the login as a new external user and redirects to the registration page.

• For existing users, the AbpUserLogins table already contains the mapping between the ABP user and the Azure AD provider, so SSO works as expected.

Solution: To enable SSO for new users created via the admin UI, you must ensure that an entry is created in the AbpUserLogins table for the Azure AD provider when the user is created. This is not done automatically by ABP when you create a user via the admin UI.

How to fix:

1. After creating a user via the admin UI, you need to manually associate the Azure AD login with the user. This can be done by:

   • Having the user log in once via Azure AD, which will create the mapping (but will prompt for registration if not found).
   • Or, programmatically insert a record into the AbpUserLogins table for the user, specifying the correct provider name (e.g., "AzureAD") and provider key (the Azure AD user's unique identifier).

2. Alternatively, you can customize the user creation process to allow an admin to specify the external login provider and key when creating a user, and insert the mapping at that time.

References:

• How to Setup Azure Active Directory and Integrate ABP Angular Application
• How to Use the Azure Active Directory Authentication for MVC / Razor Page Applications

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