Files
numolus/app/controllers/api/base_controller.rb
T
wkhandClaude Opus 5.5 7fce972fdc Live collaboration with Yjs over ActionCable
All editors now work on a server document at the same time instead of
taking turns behind an edit lock.

- The document's content is a sequence of Yjs updates (document_updates);
  DocumentChannel stores and relays them immediately, checks access on
  subscribe and again whenever links or memberships change.
- app/frontend/collab/: the store stays position-based; a binding maps it
  to a Yjs form with stable row/column ids, so a row inserted by one
  person doesn't misplace what another is typing. Remote changes are
  applied only after pending local ones went into Yjs.
- Per-person undo (Y.UndoManager), presence via awareness: the others'
  selections as coloured boxes with names, avatars in the toolbar.
- Existing JSON documents convert on first open, deterministically, so
  two people opening one at once end up with the same Yjs state.
- Editors compact the stored updates after 200 and keep a JSON snapshot
  current for export and duplicating. Edit lock and polling are gone.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-28 20:41:02 +02:00

22 lines
774 B
Ruby

module Api
class BaseController < ApplicationController
# the app sends the CSRF token from the page's meta tag as X-CSRF-Token
protect_from_forgery with: :exception
rescue_from ActiveRecord::RecordNotFound do
render json: { error: "not_found" }, status: :not_found
end
rescue_from ActiveRecord::RecordInvalid do |e|
render json: { error: "invalid", messages: e.record.errors.full_messages }, status: :unprocessable_entity
end
rescue_from ActionController::InvalidAuthenticityToken do
render json: { error: "csrf" }, status: :unprocessable_entity
end
private
# a share link token, for visitors (with or without account) who got the link
def share_token = request.headers["X-Share-Token"].presence
end
end