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Ruby on Rails

Ruby on Rails. It’s so rad. What we’ll cover. What is Ruby? What is RoR ? Why RoR ? Developing with RoR Deployment Demo Questions. What is Ruby?. Object-oriented language Written in 1995 by some smart Japanese man Influenced by PERL, Python, and Lisp (but mostly Python)

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Ruby on Rails

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  1. Ruby on Rails It’s so rad

  2. What we’ll cover • What is Ruby? • What is RoR? • Why RoR? • Developing with RoR • Deployment • Demo • Questions

  3. What is Ruby? • Object-oriented language • Written in 1995 by some smart Japanese man • Influenced by PERL, Python, and Lisp (but mostly Python) • EASY to understand, simple syntax

  4. What is RoR? • Full stack web application framework • Written in Ruby (duh) • Since 2004 • Open Source • Focused on rapid application development

  5. Why Ruby on Rails? • Rails is a framework • Python – TurboGears, Django • Java - JSP/Servlets, Struts • PHP – Cake, Symfony • Convention over Configuration • Super fast to get started writing useable code class Project < ActiveRecord::Base belongs_to :portfolio has_one :project_manager has_many :milestones end

  6. Developing with RoR • Rails gives the developer a solid infrastructure to build a • web application • Model View Controller (MVC) • Model, the Object Relational Mapper • Automatically maps the database to objects • Very easy and natural to work with • Thin layer with SQL – dynamically generates SQL queries • User.find_all • User.find(:first, :conditions => [“user = ? AND password =?”], user, pass) • Controller, the logic of the application • View, provides HTML templates and UI helpers

  7. Developing with RoR

  8. Developing with RoR • Support many database back-ends (db agnostic) • Oracle, MySQL, PosgreSQL, SQLite • Built-in support for AJAX • Built-in functional and unit testing • Code tests while you develop • Test templates are automatically generated • Rails comes with a complete toolbox of classes, helpers and utilities

  9. Deployment • Rails apps are compatible with Unix and Windows • environments • Rails apps can be deployed on multiple web server • Configurations • Mod_rails (Phusion Passenger) • Mongrel/Mongrel Cluster (plus some Apache goodness for proxy) • FastCGI – running behind Apache or Lighty • CGI • WEBrick – a standalone Ruby web server, easy for development • Easy control of the deployment with Capistrano • A scripting tool to control the deployment of the application on multiple sites • Easy control of schema migration • rake migrate VERSION=3

  10. Demo • Real-time demo of the “Blog in 15 Minutes” (so it will probably take at least 20)

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