It is a well known fact that Ruby on Rails is gaining quite a bit of popularity among developers and deployers of Web applications and for good reasons. Rails is considered a well thought out Web application framework based on several design principles such as Dont Repeat Yourself (DRY), Convention Over Configuration, which enable an agile yet practical development environment. JRuby provides another benefit by allowing them to leverage the stability and the reliability of the Java platform as well as vast array of Java libraries available. This workshop will go through the language features of Ruby (and JRuby) programming language first, especially meta-programming features that make key features of Rails possible. The usage of JRuby is then talked about. The rest of the workshop will be devoted to learning Rails functionality such as ActiveRecord, AcionController, and ActionView. The advanced features of Rails such as Testing, RESTful support, Ajax, and deployment options are going to be then discussed. This workshop is half lecture and half hands-on labs. Attendees are expected to do lots of coding. About Extreme Learning: Get taught directly by the experts and interact with peers in an engaging informal environment. These are intensive, deep dive training sessions designed for advanced IT professionals which incorporate expert-led presentations.

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ILT

Any developer who would like to learn how to build agile Web applications using Ruby and Rails.

Some Web application development experience would be useful but not required.

Upon completion of this course, students should be able to write relatively sophisticated real-life Web applications leveraging key features of the Rails framework.

Module 1 - Ruby Language Basics

• What is Ruby?
• Ruby naming convention
• Interactive Ruby (IRB)
• Ruby object
• Ruby types

• What is a block?
• How does a block look like?
• How does a block get passed and executed?
• Proc object
• & (Ampersand) operator
• lambda
• Where do blocks get used?
• What is a closure?

• What is and Why Meta-programming?
• Ruby language characteristics (that make it a great meta-programming language)
• Introspection
• Object#send
• Dynamic typing (and Duck typing)
• missing_method
• define_method

• Objects in Ruby language
• Class object
• Dynamic method invocation through Object#send
• Self
• Singleton method

• What is and what is not JRuby?
• Why JRuby (over Ruby) & JRuby on Rails (Ruby on Rails)?
• Why use (J)Ruby with Java?
• Calling Java from JRuby
• Calling (J)Ruby from Java

• App directory structure (MVC)
• Environment
• Rake
• Generator
• Migration
• Rails console

• What is scaffolding?
• Controller
• Templates

• What is Active Record?
• Active Record Object Creation
• Find operation
• Dynamic Attribute-based Finders
• Validation
• Migration
• Callbacks
• Exception Handling

• What is an Association?
• Auto-generated methods
• Cardinality
• Unsaved objects and association

• What is ActionController?
• ActionController classes
• Request handling
• Parameters
• Session & Flash
• Rendering
• Redirection
• Classic problem of user refresh & redirection
• Routing (request mapping)

• Types of templates
• ERb template
• Builder template
• JavaScriptGenerator template
• Using sub-templates
• Layouts
• Partials

• Types of ActionView Helpers
• FormHelpers
• FormTagHelpers

• What is REST?
• REST support in Rails
• Format of the response via response_to

• Overview of Rails testing
• Unit testing
• Functional testing
• Integration testing
• RSpecPerformance Tactics

• Ajax/JavaScript libraries in Rails
• PrototypeHelper
• ScriptaculousHelper
• JavaScriptMacrosHelper
• JavaScript related utility methods
• Ruby JavaScript template

• Deployment server options
• Capistrano
• Deployment over Java EE server

• Flickr
• Redmine