Hexagonal

Hexagonal architecture separates the application core from adapters.

architecture :hexagonal

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

The default Rails-flavored directories are:

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 app/infrastructure/**/*.rb]

Pass any of those keys to override the defaults.