No, ABP's IBackgroundWorker is not tenant-safe by default. When you implement a background worker in a multi-tenant ABP application, the worker runs in the host context unless you explicitly change the tenant context. ABP does not automatically isolate or scope background workers per tenant.
To safely process tenant-specific logic, you must manually switch the tenant context using ICurrentTenant.Change for each tenant. Your approach is correct: enumerate all tenants, and for each active tenant, use ICurrentTenant.Change(tenant.Id) to set the context before executing tenant-specific logic. This ensures that all services resolved within the using block operate under the correct tenant.
Here is a refined example:
protected override async Task DoWorkAsync(PeriodicBackgroundWorkerContext workerContext)
{
var tenantStore = workerContext.ServiceProvider.GetRequiredService<ITenantStore>();
var tenants = await tenantStore.GetListAsync();
foreach (var tenant in tenants)
{
if (tenant.IsActive)
{
using (var scope = workerContext.ServiceProvider.CreateScope())
{
var currentTenant = scope.ServiceProvider.GetRequiredService<ICurrentTenant>();
using (currentTenant.Change(tenant.Id))
{
// Place tenant-specific logic here
}
}
}
}
}
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Clean and Rebuild Solution
Build > Clean Solution, then Build > Rebuild Solution. This ensures all old binaries are removed and rebuilt.Delete bin and obj Folders
bin and obj folders in all your project directories. Sometimes, stale files can cause old code to run.Check for Multiple Startup Projects
Disable "Just My Code" and Enable Source Link
Tools > Options > Debugging > General:
Clear Visual Studio Component Cache
.vs folder in your solution directory.Restart Visual Studio and Your Machine
Check for Hot Reload Issues
Update Visual Studio
Compare with a New Template Project
If the problem continues after these steps, consider creating a minimal reproduction by starting from a new template and gradually adding your code until the issue appears.
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To generate an OpenIddict access token for a mobile user after successful 2FA verification (so that the token is equivalent to what is returned from /connect/token), you should not manually create tokens using TokenManager or by directly generating JWTs. Instead, you should leverage the OpenIddict authorization flow, ideally by implementing a custom grant type that handles the 2FA verification and then issues a token using the same pipeline as /connect/token.
Implement a Custom Grant Type in OpenIddict:
Why Not Use TokenManager Directly?
How to Implement:
services.AddOpenIddict()
.AddServer(options =>
{
// ... other options ...
options.AllowCustomFlow("2fa");
options.SetTokenEndpointUris("/connect/token");
options.AddEventHandler<OpenIddictServerEvents.HandleTokenRequestContext>(builder =>
{
builder.UseInlineHandler(async context =>
{
if (context.Request.GrantType != "2fa")
return;
// Extract parameters (userId, code, provider, etc.)
// Perform 2FA verification
// If valid, create principal and sign in:
var principal = ...; // create principal with claims, scopes, etc.
context.Validate(principal);
});
});
});
POST /connect/token
Content-Type: application/x-www-form-urlencoded
grant_type=2fa&user_id=...&code=...&provider=...
This way, the token returned is fully compatible with ABP's authorization system and works with [Authorize] attributes and internal service calls.
This approach ensures your tokens are generated in a standard, secure, and ABP-compatible way after 2FA verification.
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Oracle 数据库（包括 19c）本身并不支持原生的 BOOLEAN 类型，EF Core 在生成迁移脚本时会直接映射为 BOOLEAN，导致如你截图所示的错误。你当前用的 .HasConversion<int>() 方式（将 bool 转为 int 0/1）是主流且推荐的做法。
ABP 官方和 EF Core 社区都没有更“自动化”的通用方案，建议如下：
保持你现在的写法：
builder.Entity<BackgroundJobRecord>()
.Property(u => u.IsAbandoned)
.HasConversion<int>(); // bool 映射为 int (0/1)
这样迁移脚本会生成 NUMBER(1) 字段，兼容 Oracle。
如果有多个 bool 字段，可以写一个扩展方法批量处理，或在基类/通用配置中统一加上。
迁移脚本生成后，务必检查是否有 BOOLEAN 类型，手动改为 NUMBER(1) 或 tinyint。
参考官方文档说明：
结论：EF Core + Oracle 下，bool 字段只能用 .HasConversion<int>() 或手动映射为 NUMBER(1)。没有更自动的通用方案，这是 Oracle 的限制。
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To successfully roll back from ABP 9 to ABP 8, you must ensure that both your application code and your database schema are fully reverted to their ABP 8 state. The error you are seeing indicates a schema mismatch: your ABP 8.2.3 code expects columns like IsDeleted, CreationTime, etc., but your database is missing them—likely because the ABP 9 migration dropped or altered these columns.
Here’s how to resolve this:
Restore the Database:
Clear All Caches:
Verify Connection Strings:
Check for Shadow Migrations:
Rebuild and Redeploy:
Troubleshooting:
If you follow these steps and ensure both code and database are in sync for ABP 8, the error should be resolved.
Sources:
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In ABP, when you define permissions with MultiTenancySides, permissions marked as Host are only available to host users, and Tenant for tenant users. Permissions with Both are available to both.
If your menu's requiredPolicy is set to the "application area" permission (MultiTenancySides = Both), then both host and tenant users can be granted this permission. If a tenant user is seeing the menu item even when their role does not have the permission, it usually means:
By default, when you add a new permission, it is not automatically granted to existing tenant roles unless you explicitly seed it. However, if your permission tree is structured so that a parent permission is granted, all child permissions may be considered granted unless you override this behavior.
For your scenario, ensure:
To debug:
If you want tenant users to have read-only access only when explicitly granted, make sure the "application area" permission is not granted by default to tenant roles, and that your menu checks for this permission.
If you have recently added new permissions, remember that existing tenant roles will not have them granted automatically. You may need to update your seeding logic or manually assign them.
Sources:
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To enable client-side validation in an ABP MVC Core Razor Pages project, you must ensure that the required validation scripts are included in your layout. ABP's default layouts include these scripts, but if you use a custom layout, you need to add them manually.
Add the following lines before the closing </body> tag in your custom layout to enable client-side validation:
@section Scripts
{
<partial name="_ValidationScriptsPartial" />
}
Or, if your layout does not support sections, add directly:
<partial name="_ValidationScriptsPartial" />
Make sure your form includes the correct asp-validation-summary and asp-validation-for tags, which you already have.
Also, ensure that jQuery and the validation libraries are loaded. The _ValidationScriptsPartial partial includes these by default.
If you use a custom error message key (e.g., "Validation:EmailRequired"), ensure that your localization resources contain the corresponding translations.
Example minimal layout addition:
<body>
@RenderBody()
<partial name="_ValidationScriptsPartial" />
</body>
Sources:
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To implement a notification widget in ABP Framework that displays real-time popups (such as in the top right corner), you can leverage SignalR for real-time messaging and ABP’s extensibility for UI integration. Here’s a recommended approach:
Example resources:
This approach is modular and works for MVC, Angular, and Blazor UIs. You can customize the notification appearance and behavior as needed.
Sources:
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When you change the permission structure in a microservice, the new permissions are registered in the database only when the microservice is restarted. However, the UI may not reflect the new structure immediately due to caching or because the admin role does not automatically get new permissions.
Steps to ensure the UI reflects your new permission structure:
If you want new permissions to be automatically granted to the admin role, implement a data seeder using the IPermissionDataSeeder service in your microservice.
If you still do not see the new structure, ensure that your Angular UI is not using a cached API response and that the backend API is returning the updated permission structure.
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To upgrade your ABP solution from 8.3.0 to 9.2.0, you need to follow the migration steps for each major version increment. The ABP migration process does not provide a single SQL migration file that covers both host and tenant databases for all scenarios, especially when using separate schemas for tenants. Instead, you should:
Recommended Steps:
Read and follow the official migration guide for ABP 9.0:
After updating your codebase and dependencies, use the standard EF Core migration workflow:
Add-Migration (or dotnet ef migrations add) to generate a migration that includes all changes from 8.3.0 to 9.2.0.If you use ABP's SaaS module with separate schemas, ensure your migration logic iterates over all tenant schemas and applies the migration to each.
Note: There is no official, pre-generated "single migration file" provided by ABP for all host and tenant upgrades. The migration is generated based on your current database state and code changes.
Summary:
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