Ruby on Rails intro - 4th of January 2014 - Ruby Hellug

1. Intro to Ruby on Rails
Ruby Hellug – 4th of Jan 2014 1
Eleni Chourouzidou (eleni@webspirit.gr)

2. Brief History

Ruby
2

Ruby on Rails

3. 3
Framework

Organizes code

Provides tools

Automates tasks

4. 4
Brief timeline

1993: Beginning of Ruby

1995: Ruby's first release

1999: Ruby's english documentation

2004: Creation of Ruby on Rails

Today: Ruby version 2.1, RoR version
4.0.2

5. 5
Clean & elegant syntax
> 2.times { print 'We love Ruby!' }
> We love Ruby!We love Ruby! => 2

6. New app, file structure
> rails new blog
> cd blog
> rails server
Already a functional
application!!
6

7. Scaffold: Fast functionality
7

8. 8
MVC

9. 9
Migrations
db/migrate/20140101225451_add_author_to_posts.rb

10. 10
Model Validations

12. Controller
12

14. 14
Routes & RESTful routing
config/routes.rb

15. 15
Routes & RESTful routing

16. 16
What to see next

Codeschool Free Course: Rails for
Zombies www.railsforzombies.org

Tutorial: Creating a simple ToDo
application
www.arubystory.blogspot.gr

Book: Rails 4 in Action (Publication 28
Mar 2014)

17. 17
Any Questions?
Thank you!

18. 18

19. 19
Install Ruby 2
Install gem ‘rails’ in console:
> gem install rails
Create new rails app in console:
> rails new blog
Change Directory (get in the app folder)
> cd blog

20. 20
Start the server
> rails s
Visit rails welcome page in the
browser:
localhost:3000
Create Scaffold Post, in the
console:
> rails g scaffold post
title:string body:text

21. 21
Run migration = create db table:
>rake db:migrate