[tannevaled]

Binds github.com/go-ruby-actionpack/actionpack — a pure-Go (CGO=0) port of Rails' Action Pack — into rbgo as a native module set, so require "action_controller" / require "action_dispatch" resolve with no .rb file. Pinned at @main (8ba13fb).

The four subpackages

Subpackage	Ruby surface
routing	ActionDispatch::Routing::RouteSet + Mapper — the draw DSL (get/post/put/patch/delete/match, resources/resource, root, namespace/scope, member/collection, constraints, all option keys incl. to:/as:/via:/on:/constraints:/defaults:), plus recognize / path / path_args / url_for reverse routing
controller	ActionController::Base (over AbstractController::Base + ActionController::Metal) — before_action/after_action/around_action (with only:/except:/if:/unless:), rescue_from, render/redirect_to/head, and PostsController.dispatch(action, env)
parameters	ActionController::Parameters — permit/require/[]/to_h/to_unsafe_h/merge strong-parameters, with ParameterMissing/UnpermittedParameters/UnfilteredParameters errors
dispatch	ActionDispatch::Request / Response over the bound go-ruby-rack

Seam wiring

Every seam runs inline on the VM goroutine under the GVL:

• RunAction (primary): the Ruby action method (def index; …; end) is sent to the controller instance; an unmapped action returns AbstractController::ActionNotFound.
• Filters / rescue_from: wired to Ruby blocks or named instance methods sent to the instance; around filters yield through a native block so the Ruby method's yield runs the rest of the chain.
• Renderer (view layer): sends a render message to an ActionView-style context object set with view_context — so the consolidated binary dispatches to the bound actionview at the Ruby level; actionpack itself does not import actionview. In this clone (no actionview present) the seam is tested with an injected Ruby renderer stub (a Stub.new responding to #render).

A controller instance is a plain RObject of the user's subclass whose live *controller.Base is reached through an @__ac handle (mirroring the ActionCable channel binding), so a bare render inside def index resolves to the inherited native method that writes into that request's response. The routing/dispatch/params value objects each carry their Ruby class for classOf.

Registration

registerActionPack joins the bootstrap after registerRack/registerActionCable; providedFeatures gains action_controller/action_dispatch/actionpack/abstract_controller; classOf gains the RouteSet/Mapper/Parameters/Request/Response cases.

Verification

• 100% coverage of all new files (actionpack*.go): routing recognize/resources + reverse-routing error paths, filters + rescue_from (match/miss/inherited/with:), strong-params permit/require raise paths, the RunAction/around/rescue/Renderer seams (string + non-string render), double-render, missing action.
• Full internal/vm + internal/object suites green; gofmt -l empty; go vet clean.
• Builds on all 6 64-bit arches: amd64, arm64, riscv64, loong64, ppc64le, s390x.

Deps: go-ruby-activesupport + go-ruby-rack (both already bound). CGO=0, GOWORK=off, go 1.26.4, BSD-3-Clause.

🤖 Generated with Claude Code

[tannevaled]

Superseded by the wave-2 consolidation PR (single merge onto main; shared builtins/require/object_model/vm/arith/digest_bind). Work preserved verbatim; branch kept for reference.