OSOM - Ruby on Rails
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This document provides information about Ruby on Rails. It introduces Ruby on Rails creator David Heinemeier Hansson and describes Rails as a full-stack web application framework that follows the MVC pattern and convention over configuration approach. It also summarizes key aspects of the Rails architecture including ActiveRecord for object-relational mapping, controllers for request management, and ActionView for presentation templating.
OSOM - Ruby on Rails
- 2. Mihai Frisan ● Programator ● Indragostit de Ruby on Rails din 2006 ● Sustinator al software-ului open source Blog: mihai.frisan.ro Twitter: @mihaifrisan
- 3. Yukihiro 'Matz' Matsumoto Creator Ruby
- 4. Ruby ● limbaj de programare orientat obiect ● dinamic ● focusat pe simplitate si productivitate ● sintaxa eleganta si naturala
- 5. Totul in Ruby este obiect # Tipareste "MAJUSCULE" puts "majuscule".upcase # Tipareste valoarea absoluta a lui -5 puts -5.abs # Tipareste de 5 ori "Ruby Rocks!" 5.times do puts "Ruby Rocks!" End # Tipareste numerele de la 1 la 100 1.upto(100) { |i| puts i }
- 6. Ruby este un limbaj de programare dinamic def len(list) public static int len(List list) x=0 { list.each do |element| int x = 0; x += 1 Iterator listIterator = end list.iterator(); end while(listIterator.hasNext()){ x += 1; } }
- 7. Ruby este focusat pe simplitate si productivitate class Circle Class Circle attr_accessor :center, :radius private Coordinate center, float radius; end public void setCenter(Coordinate center){ this.center = center; } public Coordinate getCenter(){ return center; } public void setRadius(float radius){ this.radius = radius; } public Coordinate getRadius(){ return radius; } }
- 9. David Heinemeier Hansson Creator Ruby on Rails
- 10. Rails ● framework destinat dezvoltarii de aplicatii Web ● full-stack framework ● MVC pattern ● Convention over Configuration
- 12. Models
- 13. ActiveRecord ● Object Relation Mapping (ORM) ● Mapeaza tabele la clase si randurile la obiecte ● Database Agnostic
- 14. ActiveRecord CREATE TABLE entries ( id int(11) NOT NULL auto_increment, name varchar(255), comments varchar(255), PRIMARY KEY (id) ); class Entry < ActiveRecord::Base # nothing here! end entry = Entry.new entry.name = "John" entry.comments = "What a great Web site!" entry.save entry = Entry.find(1) puts entry.name # output: "John"
- 15. ActiveRecord class Entry < ActiveRecord::Base belongs_to :account has_many :comments validates_presence_of :name acts_as_taggable end entry = Entry.new entry.name = "John" entry.comments << Comment.new("What a great Web site!") entry.save Entry = Entry.find_by_name(“John”)
- 16. Rails programmers like fat Models
- 17. Controler
- 18. ActionController ● Managementul request-urilor ● Mapeza actiunile la metode ● Separa logica de prezentare ● Implementeaza resursele RESTful
- 19. ActionController
- 20. View
- 21. ActionView ● Prezinta utilizatorului datele ● Foloseste template-uri ● Mecanism de caching
- 22. ActionView
- 23. Proiecte dezvoltate in Rails
- 24. Companii care folosesc Rails
- 25. De ce as folosi Rails? ● Convention over Configuration ● Data mapping ● AJAX ● Testing Framework ● Agile Development ● Numar impresionant de librarii