Hexagonal

Hexagonal architecture separates the application core from adapters.

architecture :hexagonal,
  application: %w[app/services/**/*.rb app/use_cases/**/*.rb],
  domain: "app/domain/**/*.rb",
  ports: "app/ports/**/*.rb",
  adapters: %w[app/adapters/**/*.rb app/integrations/**/*.rb]

This creates four components:

• application
• domain
• ports
• adapters

The core rules are:

• domain must not use adapters
• ports must not use adapters
• application can use domain and ports
• adapters can use application, domain, and ports
• no cycles across the four components

Use the Rails defaults with:

preset :rails_hexagonal