Nextended.ResponseFilters.AspNetCore 10.1.30

<p align="center"> <img src="https://raw.githubusercontent.com/fgilde/Nextended/main/icon.png" alt="Nextended" width="110" height="110"> </p>

Nextended.ResponseFilters.AspNetCore

ASP.NET Core adapter for Nextended.ResponseFilters — registers the pipeline as a global IAsyncResultFilter and replays structural edits against the serialized JSON tree.

📖 Documentation: English · Deutsch

ASP.NET Core adapter for Nextended.ResponseFilters. Wires the response-filter pipeline into MVC as a global IAsyncResultFilter — every ObjectResult.Value runs through the configured filters before serialization.

Installation

dotnet add package Nextended.ResponseFilters.AspNetCore

Quick Start

Define a filter (see Nextended.ResponseFilters for the full API):

public class OrderResponseFilter : ResponseFilter<OrderDto>
{
    public OrderResponseFilter()
    {
        Nullify(x => x.TotalCost).Unless(WhenContext(ctx =>
            ctx.Services.GetRequiredService<ICurrentUser>().IsInRole("Finance")));
    }
}

Wire it up once in Program.cs:

builder.Services.AddNextendedResponseFilters(new[]
{
    typeof(OrderResponseFilter).Assembly
});

That's it — every controller that returns an OrderDto (or anything containing one) now ships through the pipeline before serialization.

What it does

HTTP request
  ↓
[ … middleware … ]
  ↓
Controller action → ObjectResult { Value = OrderDto }
  ↓
ResponseFilterResultFilter (IAsyncResultFilter)
  → IResponseFilterPipeline.ProcessAsync(value, ctx)
      → walks the graph, applies registered filters
  ↓
JSON serializer
  ↓
HTTP response

The result filter is registered globally via MvcOptions.Filters.AddService<ResponseFilterResultFilter>(). Failures inside the pipeline are caught and logged — a buggy rule cannot 500 a request.

Notes

• The IResponseFilterContext handed to predicates has HttpContext.RequestServices and HttpContext.RequestAborted pre-wired.
• Filter scope follows the request scope by default. Override via the lifetime parameter of AddNextendedResponseFilters if needed.
• If you also use ABP / FluentValidation / OData — the filter sits after model binding and before serialization, so it composes cleanly with all of them.

Supported frameworks

• net8.0
• net9.0
• net10.0

Dependencies

• Nextended.ResponseFilters

The Nextended family

<details> <summary>All 18 Nextended packages</summary>

Core libraries

• Nextended.Core — Foundation library — extension methods, custom types (Money, Date, BaseId, SuperType), class mapping, deep clone, encryption, hashing and the code-generation attributes.
• Nextended.Cache — Expression-based caching — automatic cache keys from method expressions, CacheProvider with condition-based invalidation, thread-safe AddOrGetExisting.

Data access

• Nextended.EF — Entity Framework Core extensions — graph loading (LoadGraphAsync, IncludeAll, MultiInclude), declarative include definitions, paging, dynamic sorting and bulk operations.

ASP.NET Core & web

• Nextended.Web — ASP.NET Core utilities — zero-config OData (AddODataAuto), composable IQueryable OData appliers, strongly typed controller URLs, streaming download helpers and a background executor that can replay a captured request.
• Nextended.ResponseFilters — Fluent, provider-agnostic pipeline that redacts, masks, rounds, truncates, hashes, prunes and restructures response DTOs before serialization — per request, per user, per permission.
• Nextended.ResponseFilters.AspNetCore — ASP.NET Core adapter for Nextended.ResponseFilters — registers the pipeline as a global IAsyncResultFilter and replays structural edits against the serialized JSON tree. (this package)

UI libraries

• Nextended.Blazor — Blazor helpers — IBrowserFile extensions (bytes, data URLs, downloads), a hierarchical model for browsing inside uploaded zip/tar/rar archives, MIME-type detection and component-parameter reflection.
• Nextended.UI — WPF and Windows desktop helpers — a global input-binding manager with hold/sequence matching, DirectInput and XInput gamepad readers, key-bind capture controls, converters, behaviours, markup extensions and runtime-defined PropertyGrid types.

Code generation & tooling

• Nextended.Imaging — Image processing — aspect-preserving resize, crop, colour replacement, brightness-based foreground picking, thumbnail generation, byte/data-URL conversion and MIME detection from magic bytes.
• Nextended.CodeGen — Roslyn source generator — DTOs and interfaces from your entities, strongly typed classes from JSON/XML, lookup tables from Excel, and documentation from source files.

.NET Aspire hosting

• Nextended.Aspire — Conditional AppHost builder extensions — WithReferenceIf / WaitForIf / WithExplicitStartIf, strongly typed environment variables from config objects, HTTPS dev-cert wiring, Docker guards, GitHub-source resources and npm app discovery.
• Nextended.Aspire.Hosting.Supabase — The complete Supabase stack — Postgres, Auth (GoTrue), REST, Realtime, Storage, Studio, Kong and Edge Functions — as one composable Aspire resource.
• Nextended.Aspire.Hosting.N8n — The n8n workflow-automation platform as an Aspire resource, with Postgres persistence, workflow import and a typed client for triggering workflows from .NET.
• Nextended.Aspire.Hosting.Grafana — Grafana, Prometheus, Loki, Tempo, Promtail, cAdvisor, postgres_exporter and the OpenTelemetry Collector as composable resources with auto-provisioned datasources.
• Nextended.Aspire.Hosting.WebDataStudio — WebDataStudio — a browser database studio for PostgreSQL, MySQL, SQL Server, SQLite, Oracle, DuckDB, ClickHouse, MongoDB and Redis — wired to the databases of your stack.
• Nextended.Aspire.Hosting.AspireUI — AspireUI — the visual AppHost builder — as a resource inside your own Aspire stack, with an optional pre-seeded admin user and a starter stack built from your project paths.
• Nextended.Aspire.Hosting.LocalAI — Self-hosted, OpenAI-compatible multimodal AI — image generation, text-to-speech, speech-to-text and video — with gallery model management, GPU support and Open WebUI.
• Nextended.Aspire.Hosting.Php — Run PHP endpoints inside your Aspire stack — a docroot folder or a single router script served by PHP's built-in web server, with php.ini settings as fluent options.

</details>

Links

• 📦 NuGet package
• 📖 Documentation — English
• 📖 Dokumentation — Deutsch
• 🏠 Documentation portal
• 🧑‍💻 Source code
• 🐛 Report an issue

License

GPL-3.0-or-later — see LICENSE.