Service Patterns

Structure

Services live in app/services/service/ and encapsulate business logic. They are used e.g. by GraphQL resolvers and REST controllers.

• Pass all arguments via the execute class method, e.g. Service.execute(param: :value). It is the single entry point.
• Some services have with_current_user chainable method, e.g.g Service.with_current_user(user).execute(param: :value)
• Inherit from Service::Base
• Current user is supplied automatically and available as current_user instance method
• Services expecting current user should have requires_current_user! in their class body
• In specs, Service.execute class method should be stubbed when needed
• Add attr_reader for all arguments passed to the initializer, so they are available in instance methods
• Service initializer should not have super() call, as Service::Base does not have an initializer