Here we have listed all the important functions, scripts, validations, etc.
Ruby on Rails - Rake Utility
Ruby on Rails - The Scripts
Ruby on Rails - The Plugins
Ruby on Rails - The Generators
Ruby on Rails - Model Relations
Ruby on Rails - Controller Methods
Ruby on Rails - Layouts
Ruby on Rails - Render
Ruby on Rails - HTML Forms
Ruby on Rails - RXML
Ruby on Rails - RHTML
Ruby on Rails - HTML Links
Ruby on Rails - Session and Cookies
Ruby on Rails - User Input Validations
Ruby on Rails - Maths Functions
Ruby on Rails - Finders
Ruby on Rails - Nested with-scope
Ruby on Rails - Callback Functions