0 - http://www.ruby-doc.org/stdlib-1.9.3/libdoc/delegate/rdoc/Si...
1 - http://www.ruby-doc.org/stdlib-1.9.3/libdoc/delegate/rdoc/De...
2 - http://www.ruby-doc.org/stdlib-2.0/libdoc/forwardable/rdoc/F...
Or just inject the whole controller instance and you have your router helpers too!
- Built-in ActiveModel validations.
- Designed to be used with form objects.
- Easier and more flexible composition.
- Translatable with I18n.
- Quacks like an ActiveModel.
That being said, Mutations is a great library for PORO interactors and ActiveInteraction wouldn't exist without it.