Rails Lite (& ActiveRecord Lite)

Hand-rolled implementation of the basic functionality of Ruby on Rails and Active Record, to improve my understanding of how these tools work under the hood.

Rails functionality built:

• Singleton Router with REGEX based route generation
• ApplicationController (as ControllerBase)
• Rendering of erb template views
• Exposes params, session, Flash and Flash.now
• CSRF protection with form authenticity token helper
• Basic middleware (StaticAssets & ShowExceptions)

Active Record functionality built:

• ActiveRecord::Base model superclass (as SQLObject)
  • find, all, create, update, destroy
  • chainable where and where_lazy
• ActiveRecord::Relation (as Relation)
• Support for belongs_to, has_many and has_one_through associations

Future additions

• Conversion to a gem
• Additional ORM functionality:
  • Chainable, lazy joins
  • Eager loading with includes
  • Polymorphic associations