Overview of RoR Setting up Environment Ruby Language MVC – ActiveRecord, ActionController, ActionView REST Architecture Routing DB Migrations ActiveRecord Associations Validation/Validation Helpers Forms/ActionView helpers Assets/Bundler Caching Debugging RoR Quick-start Demo

1. Boutique product development company
It is amazing what you can accomplish when you have a client-centric team to deliver outstanding products.
Ruby on Rails - 101
Umair Amjad
http://about.me/umairamjad

2. Who am I?
Umair Amjad
Technical Lead / SSE
(Bayt.com)
(Confiz Limited)
(AboutUs)
BS CS 2006 (FAST-NU)
MS CS 2012 (FAST-NU)
http://about.me/umairamjad

3. Why I am here?

4. What will happen next?
(6 sessions of 4 hours each)
Ruby on Rails 102 (Moderate)
Ruby on Rails 103 (Expert)
Fun with Gems, Authenticating Users, Heroku, Capistrano,
Security/Performance, Tuning, Pagination, Email in Rails, Eager Loading,
Background Tasks, Unit Testing, Internationalization & Localization ...

5. Ruby on Rails Workshop
Agenda:
• Ruby Language
• Environment Setup
• Overview of RoR
• MVC – ActiveRecord, ActionController, ActionView
• Routing
• Assets/Bundler
• REST Architecture
• DB Migrations
• Console
• ActiveRecord Associations
• Logging
• Validation/Validation Helpers
• Forms/ActionView helpers
• Caching
• Debugging

6. Why Ruby on Rails?

7. Why Ruby on Rails?
http://www.payscale.com/research/US/Skill=Ruby_on_Rails/Hourly_Rate

8. Ruby on Rails - Users
- Amazon (internal)
- Intel (internal)
- HP (internal)
- NASA (internal)
- Twitter (in early age)
- Basecamp
- Slideshare
- Pakwheels
- Github
- YellowPages

9. Ruby on Rails – (few) Practitioner in Pakistan
- Confiz Limited
- Nextbridge
- Arbisoft
- Tkxel
- PITB
- Kwanso
- 7vals
- Venexel
…..

10. Nice-to-Have
- Basics of Linux
- Basic knowledge of HTML, CSS, JS
- Databases Relations
- Frameworks
- Client Server Architecture
- HTTP methods
- MVC (Model View Controller)
- ORM (Object-relational mapping)
- Cloud Computing

11. Ruby

21. Primary:
http://www.tutorialspoint.com/ruby/index.htm
The Little Book Of Ruby
References:
http://www.codecademy.com/tracks/ruby
http://www.rubyist.net/~slagell/ruby/getstarted.html
http://rubymonk.com/learning/books/1-ruby-primer
Try Ruby online:
http://www.compileonline.com/execute_ruby_online.php

22. Environment
Setup
(RVM)

23. http://setuprubyonrails.blogspot.com/2012/04/ruby-on-rails-environment-setup-on.html
https://gorails.com/setup/ubuntu/14.10
rvm install [ruby_version]
rvm install 1.9.2
rvm use [ruby_version]
rvm use 1.9.2
rvm gemset create [gemset_name]
rvm gemset create rails3.1.3
rvm use [ruby_version]@[gemset_name]
rvm use 1.9.2@rails3.1.3

24. Overview of
RoR / MVC

33. REST
Architecture

37. Assets
/
Minification

39. Bundler

41. Code
Generation

45. Rails
Rake, Route, Controller, Model, View

46. Rake

47. Rake is Ruby make, a make-like language written in Ruby.
Rails uses Rake extensively, especially for the innumerable little
administrative tasks necessary when developing database-
backed web applications.
Rake tasks are loaded from the file Rakefile
Rails rake tasks live under /lib/tasks
You can put your own tasks under lib/tasks
bundle exec rake -T
bundle exec rake -T db #See a list of database tasks

48. db: Database
The most common tasks of the db: Rake namespace are migrate
and create, and it will pay off to try out all of the migration rake tasks
(up, down, redo, reset). rake db:version is useful when
troubleshooting, telling you the current version of the database.
rails: Rails-specific tasks
After upgrading Rails, it is useful to run rails:update, which will
update your config and scripts directories, and upgrade your Rails-
specific javascript
rake stats #gives summary statistics about your code
rake routes #lists all your defined routes
rake secret

49. Routes

55. Controllers

65. Model

86. Views

98. Debugging
/
Error Handling

101. gem install debugger
class PeopleController < ApplicationController
def new
debugger
@person = Person.new
end
end
$ rails server --debugger
=> Booting WEBrick
=> Rails 4.0.0 application starting on http://0.0.0.0:3000
=> Debugger enabled

102. Caching

106. Console

107. rails console
The console command lets you interact with your Rails application from
the command line. On the underside, rails console uses IRB, so if you've
ever used it, you'll be right at home. This is useful for testing out quick
ideas with code and changing data server-side without touching the
website.
rails dbconsole
rails dbconsole figures out which database you're using and drops you
into whichever command line interface you would use with it (and figures
out the command line parameters to give to it, too!). It supports MySQL,
PostgreSQL, SQLite and SQLite3.

109. Questions ?