Decouple, Bundle and Share with Ruby Gems

Nhm Tanveer Hossain Khan (Hasan)

Things on the table

• What is decoupling ?• What is Gem ?• Create RubyConf2013_Hello Gem.• Publish on RubyGems Repository.• And share with fellow ruby developers

About me!

• Working with Ruby for last 6 years.• Currently working with “Genweb2 Ltd.” as

“Systems Architect”• Passionate about Ruby, Java, Nodejs, Creative

idea and FOOD!• Built http://www.khadok.com• My Github profile - https://github.com/

we4tech

Decoupling!

What is decoupling Coupling?

What is decoupling ?

Direct benefits!

Benefits (contd.)

• Creates reusable code• Modularizes structure• Responds to polymorphic behavior• Possible to integrate with other projects

Trade-offs

• Requires common sense • Requires expertise on understanding “What’s

enough?”• It should be derived from a real project.• Requires tune up and adjustment based on

real requirements.

Ruby Gems!

What is Ruby Gems ?

Or This!

Real Ruby Stone!Collected from wikipedia - http://en.wikipedia.org/wiki/File:Ruby_-_Winza,_Tanzania.jpg

Ruby Gem/Gemstone!Collected from wikipedia - http://en.wikipedia.org/wiki/File:Cardinal_gems.png

Finally a complete Necklace!

Ruby Gems Repository

A complete ruby application

Create RubyConf2013_hello gem!

$ gem install bundle$ bundle gem rubyconfbd2013_hello

Generated files

Code it!# File: lib/rubyconfbd2013_hello.rbrequire "rubyconfbd2013_hello/version"

module Rubyconfbd2013Hello def rubyconfbd_year 2013 end

def rubyconfbd_location 'Bangladesh' endend

Object.send(:extend, Rubyconfbd2013Hello)Object.send(:include, Rubyconfbd2013Hello)

Add Gem information# File: rubyconfbd2013_hello.gemspec

# Other codes …… gem.authors = ["nhm tanveer hossain khan"] gem.email = ["hasan83bd@gmail.com"] gem.description = %q{A very basic gem demonstration for RubyConfBD 2013} gem.summary = %q{A very basic gem demonstration for RubyConfBD 2013} gem.homepage = "https://github.com/we4tech/rubyconfbd2013_hello"

$ rake release

Result!

Usages!

• $ gem install rubyconfbd2013_hello• $ irb• require “rubyconfbd2013_hello”• Object.rubyconfbd_year• => 2013• Object.rubyconfbd_location• => „Bangladesh”

You can check it yourself!

• Rubygems link - https://rubygems.org/gems/rubyconfbd2013_hello

• Github link - https://github.com/we4tech/rubyconfbd2013_hello

That’s It! ( Question.any? )