Ruby is a dynamic, multi-paradigm programming language that is easy to read and write. It was influenced by Perl, Smalltalk, Lisp, C and other languages. Ruby on Rails is a web application framework built on Ruby that follows conventions over configurations and the MVC pattern. Rails emphasizes code reuse, easy maintenance, and rapid development of database-backed web applications.

1. A toda máquina con Ruby on Rails Rafael García Ortega – ASPgems [email_address]

2. CSS XHTML Web 2.0 Usabilidad Wiki Standards AJAX Redes Sociales RSS APIs REST Mashups Folksonomy Soap Clouds ASAP Movilidad Tags Avatar Dinámico Estático CMS ASP SaaS Networking Microblogging Streaming Colaboración Open Social

3. Ruby Man is driven to create; I know I really love to create things. And while I'm not good at painting, drawing, or music, I can write software. Yukihiro Matsumoto, a.k.a. “Matz”

4. Ruby Lenguaje dinámico Multiparadigma Orientado a objetos Lenguaje de muy alto nivel Basado en Perl, Smalltalk, Lisp, C, … ...

5. Ruby Lenguaje natural

6. Ruby Lenguaje natural Fácil de leer

7. Ruby Lenguaje natural Fácil de leer Fácil de escribir

8. Ruby Lenguaje natural Fácil de leer Fácil de escribir Productivo

9. Ruby ¡DIVERTIDO! Lenguaje natural Fácil de leer Fácil de escribir Productivo

10. Todo son objetos

11. 123 "Ruby" true => Fixnum => String => TrueClass

12. -123.abs "Ruby".index('b') true.nil? 5 * 10 => 123 => 2 => false => 50

13. -123.abs "Ruby".index('b') true.nil? 5 * 10 5.*(10) => 123 => 2 => false => 50 => 50

14. Fácil de leer

15. Time.now

16. Time.now 100.next

17. Time.now 100.next “ Cadena”.downcase.reverse

18. Time.now 100.next “ Cadena”.downcase.reverse 5.times { print 'hola mundo' }

19. Convenciones

20. current_user :login_required @activated @@counter Status

21. a = [5, 1, 9, 2] a.empty? => false

22. a a.sort a => [5, 1, 9, 2] => [1, 2, 5, 9] => [5, 1, 9, 2]

23. a a.sort! a => [5, 1, 9, 2] => [1, 2, 5, 9] => [1, 2, 5, 9]

24. Flexible

25. class String def repeat(i) self * i end end

26. "hola mundo".repeat(4) class String def repeat(i) self * i end end "Rioja Party 2009".repeat(4)

27. "hola mundo".repeat(4) class String def repeat(i) self * i end end class String undef_method :repeat end

28. Array (Enumerable)

29. class String undef_method :repeat end foo = [1, 2, 3] foo << 4 => [1,2,3,4]

30. foo = %w(uno dos tres) foo[1] => ['uno', 'dos', 'tres'] => 'dos'

31. foo = [1, 2, 3] bar = [3, 4, 5] foo+bar => [1, 2, 3, 3, 4, 5]

32. foo = [1, 2, 3] bar = [3, 4, 5] foo+bar foo * 2 => [1, 2, 3, 3, 4, 5] => [1, 2, 3, 1, 2, 3]

33. foo = [1, 2, 3] bar = [3, 4, 5] foo+bar foo * 2 foo & bar => [1, 2, 3, 3, 4, 5] => [1, 2, 3, 1, 2, 3] => [3]

34. foo = [1, 2, 3] bar = [3, 4, 5] foo+bar foo * 2 foo & bar foo | bar => [1, 2, 3, 3, 4, 5] => [1, 2, 3, 1, 2, 3] => [3] => [1, 2, 3, 4, 5]

35. foo.each do |item| puts item end

36. a.inject(0){|sum,item| sum + item}

37. a.inject(0){|sum,item| sum + item} a.map{|item| item*2 }

38. a.inject(0){|sum,item| sum + item} a.map{|item| item*2 } (1..100).find_all{|item| item % 3 == 0}

39. Ruby on Rails The best way to predict the future is to implement it. David Heinemeier Hansson, a.k.a. “DHH” &quot;Rails&quot;, &quot;Ruby on Rails&quot;, and the Rails logo are trademarks of David Heinemeier Hansson.

40. Ruby on Rails Extraído a partir de Basecamp &quot;Rails&quot;, &quot;Ruby on Rails&quot;, and the Rails logo are trademarks of David Heinemeier Hansson.

41. Ruby on Rails Extraído a partir de Basecamp Patrón MVC &quot;Rails&quot;, &quot;Ruby on Rails&quot;, and the Rails logo are trademarks of David Heinemeier Hansson.

42. Ruby on Rails Extraído a partir de Basecamp Patrón MVC DRY – Don't repeat yourself &quot;Rails&quot;, &quot;Ruby on Rails&quot;, and the Rails logo are trademarks of David Heinemeier Hansson.

43. Ruby on Rails Extraído a partir de Basecamp Patrón MVC DRY – Don't repeat yourself COC – Conv. Over Config. &quot;Rails&quot;, &quot;Ruby on Rails&quot;, and the Rails logo are trademarks of David Heinemeier Hansson.

44. Ruby on Rails Extraído a partir de Basecamp Patrón MVC DRY – Don't repeat yourself COC – Conv. Over Config. Ágil &quot;Rails&quot;, &quot;Ruby on Rails&quot;, and the Rails logo are trademarks of David Heinemeier Hansson.

45. Instalación Linux {aptitude, yum} install ruby rubygems gem update –system geim install rails Mac OS X Leopard Gem update –system Gem install rails Mac OS X Tiger Locomotive One-Click Installer Windows InstantRails One Click Installer

46. DEMO

47. Rafael García Ortega – ASPgems [email_address] ¿Preguntas?

48. Enlaces Para aprender: Rails – Guides - http://guides.rubyonrails.org/ Página principal de Ruby: Ruby - http://www.ruby-lang.org/ Página principal de RoR: Ruby on Rails - http://rubyonrails.org/ API: Ruby(API) - http://ruby-doc.org/core/ RoR(API) - http://api.rubyonrails.org/ Consulta: Google - http://google.com Lista RoR-es - http://lists.simplelogica.net/mailman/listinfo/ror-es &quot;Rails&quot;, &quot;Ruby on Rails&quot;, and the Rails logo are trademarks of David Heinemeier Hansson.

49. Enlaces Presenatción basada en: Agile Web Development with Rails ed. Pragmatic Programmers http://www.slideshare.net/jmorrison/rochester-on-rails-introduction-to-ruby http://www.slideshare.net/agnessa/introduction-to-ruby-on-rails http://www.slideshare.net/herval/love-ruby-each-i-p-i http://rubisobrerieles.blogspot.com/2007/01/introduccin-rails-por-thecocktail.html http://www.slideshare.net/sergio.gil/ruby-mola-y-por-qu http://www.slideshare.net/rafaelgaspar/ruby-on-rails-embarque-nesse-framework-web ... &quot;Rails&quot;, &quot;Ruby on Rails&quot;, and the Rails logo are trademarks of David Heinemeier Hansson.