Common Design Patterns in Rails

1. Service Objects

• Location: app/services
• Structure

class YourService < BaseService

def initialize()

end

def call

# method body

end

private

end

2. Decorator

• Commonly used with draper gem: https://github.com/drapergem/draper
• Methods that are used on views, but present in Model can be moved to Decorator.
• Presenter also does same.

class ApplicationPresenter < SimpleDelegator

end

• https://ruby-doc.org/stdlib-2.5.1/libdoc/delegate/rdoc/SimpleDelegator.html

TODO: more design patterns

Check:

• Service Objects