Topics

• Routing
• ActiveRecord Migrations
• Classes
• Interfaces
• ActiveRecord Query Interface
• Asset Pipeline

Examples

• Adding multiple columns to a table
• Add an unique column to a table
• Add functions or properties to an existing interface
• Create a hstore column
• Scope available locales
• Add a self reference
• Rake tasks
• Manifest Files and Directives
• .group and .count
• .distinct (or .uniq)
• Monkey patch a function into an existing class