Ruby hellug

1Intro to Ruby on Rails

Ruby Hellug – 4th of Jan 2014Eleni Chourouzidou (eleni@webspirit.gr)

Brief History

Ruby Ruby on Rails

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Framework Organizes code Provides tools Automates tasks

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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

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Clean & elegant syntax

> 2.times { print 'We love Ruby!' }

> We love Ruby!We love Ruby! => 2

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New app, file structure

> rails new blog> cd blog> rails server

Already a functional application!!

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Scaffold: Fast functionality 7

MVC8

db/migrate/20140101225451_add_author_to_posts.rb

Migrations9

Model Validations

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Controller 12

Routes & RESTful routing

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config/routes.rb

Routes & RESTful routing

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What to see next

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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)

Any Questions?

Thank you!

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Install Ruby 2Install gem ‘rails’ in console:

> gem install railsCreate new rails app in console:

> rails new blogChange Directory (get in the app folder)

> cd blog

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Start the server > rails s

Visit rails welcome page in the browser:

localhost:3000Create Scaffold Post, in the console:

> rails g scaffold post title:string body:text

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

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