Action Cable Patterns
Implements real-time features with Action Cable and WebSockets.
Install
npx skills add ThibautBaissac/rails_ai_agents --skill action-cable-patterns -g -a claude-code -y- Repository
- ThibautBaissac/rails_ai_agents671
- Category
- Engineering
- Updated
- 5mo ago
- License
- MIT
- Context cost
- Lightabout 1,127 tokens
- Runs scripts
- No, instructions only
What it does
Implements real-time features with Action Cable and WebSockets. Use when adding live updates, chat features, notifications, real-time dashboards, or when user mentions Action Cable, WebSockets, channels, or real-time. WHEN NOT: Simple HTTP request/response flows, REST APIs, static content, or features that don't need real-time updates.
Action Cable Patterns for Rails 8
Overview
Action Cable integrates WebSockets with Rails:
- Real-time updates without polling
- Server-to-client push notifications
- Chat and messaging features
- Live dashboards and feeds
- Collaborative editing
Quick Start
Action Cable is included in Rails by default. Configure it:
# config/cable.yml
development:
adapter: async
test:
adapter: test
production:
adapter: solid_cable # Rails 8 default
# OR
adapter: redis
url: <%= ENV.fetch("REDIS_URL") %>
Project Structure
app/
├── channels/
│ ├── application_cable/
│ │ ├── connection.rb # Authentication
│ │ └── channel.rb # Base channel
│ ├── notifications_channel.rb
│ ├── events_channel.rb
│ └── chat_channel.rb
├── javascript/
│ └── channels/
│ ├── consumer.js
│ ├── notifications_channel.js
│ └── events_channel.js
spec/channels/
├── notifications_channel_spec.rb
└── events_channel_spec.rb
Connection Authentication
# app/channels/application_cable/connection.rb
module ApplicationCable
class Connection < ActionCable::Connection::Base
identified_by :current_user
def connect
self.current_user = find_verified_user
end
private
def find_verified_user
# Using Rails 8 authentication
if session_token = cookies.signed[:session_token]
if session = Session.find_by(token: session_token)
session.user
else
reject_unauthorized_connection
end
else
reject_unauthorized_connection
end
end
end
end
Channel Patterns
Four core patterns are available. See channel-patterns.md for full Ruby and JavaScript implementations:
