Initiation à Ruby on Rails

Apr 22, 2013Download as PPT, PDF0 likes724 views

Cette conférence a pour but de vous faire (re)découvrir le framework web Ruby on Rails. En une heure, nous vous montrerons comment développer une application simple et la déployer sur Microsoft Azure. Nous nous ferons découvrir le dynamisme de la communauté Ruby.

Initiation à
Ruby on Rails
Ruby on Rails
@humancoders

Matthieu Segret
Formateur Ruby on Rails
Cofondateur de Human Coders

• Langage interprété / orienté objet
• Libre - Licence Ruby et GPL
• Version 1.9.3 (bientôt 2.0)
• Apparu en 1995
Ruby

puts "Hello world"
Ruby
"ruby is cool".length # 12
-42.abs # 42
"Nice Day Isn't It?".downcase.split
# ["nice", "day", "isn't", "it?"]

class Book
def initialize(name)
@name = name
end
def name
@name
end
end
Ruby
book = Book.new("Programming Ruby")
book.name # "Programming Ruby"

• Framework web écrit en Ruby
• Libre - MIT
• Version 3.2 (bientôt 4.0)
• Apparu en 2004
Ruby on Rails

Projet : MyNotes
$ rails new MyNotes
• Créer un nouveau projet
$ cd MyNotes
$ rails server• Démarrer le serveur

Ressource : notes
notes
id integer
title varchar
content text

$ rails generate scaffold note title content:text
invoke active_recordcreate
db/migrate/20130130171611_create_notes.rbcreate
app/models/note.rbinvoke test_unitcreate
test/unit/note_test.rbcreate
test/fixtures/notes.ymlinvoke resource_routeroute
resources :notesinvoke scaffold_controllercreate
app/controllers/notes_controller.rbinvoke
erbcreate app/views/notescreate
app/views/notes/index.html.erbcreate
app/views/notes/edit.html.erbcreate
app/views/notes/show.html.erbcreate
app/views/notes/new.html.erb
create app/views/notes/_form.html.erb...
Génération du CRUD

migration 1
migration 2
migration 3
migration 4
devise_create_users
acts_as_follower
create_notes
add_profile_to_user
s
20110720095338_
20110718190746_
20110715205012_
20110605152153_
rake db:migrate rake db:rollback
current
.rb
Migration

Migration
class CreateNotes < ActiveRecord::Migration
def change
create_table :notes do |t|
t.string :title
t.text :content
t.timestamps
end
end
end
db/migrate/20130130175117_create_notes.rb
$ rake db:migrate

Base de données
notes
id integer
title varchar
content text

Modèle
class Note < ActiveRecord::Base
end
app/models/note.rb

Modèle : création
Note.create(content: "I created Ruby", title: "Matz")

Modèle : mise à jour
note = Note.find(1)
note.content = "I love Ruby"
note.save

Modèle : lecture
Note.where(:title => "Matz").order("title ASC").limit(5)

Modèle : suppression
Note.find(1).destroy

ERB
<p>
<b>Title:</b>
<%= @note.title %>
</p>
<p>
<b>Content:</b>
<%= @note.content %>
</p>
app/views/notes/show.html.erb

Formulaires
<%= form_for(@note) do |f| %>
<%= f.label :title %>
<%= f.text_field :title %>
<%= f.label :content %>
<%= f.text_area :content %>
<%= f.submit %>
<% end %>

Contrôleur
class NotesController < ApplicationController
def show
@note = Note.find(params[:id])
end
end
app/controllers/notes_controller.rb
app/views/notes/show.html.erb
Request
GET /notes/1
<p>
<b>Title:</b>
<%= @note.title %>
</p>

Indexation
Twitter
NoSQL
Paiement en ligne
Géolocalisation
Parsing
Pagination
Cache
Tâches de
fonds
Upload de
fichiers
Facebook
Authentification
Localisation
OAuth
A/B teste
LDAP

Montpellier
Lyon
Toulouse
Nantes
Rennes
Lille
Paris
Sophia Antipolis
Strasbourg
Marseille
Compiegne
Bordeaux

Programming Ruby 1.9 (3rd
edition)
Agile Web Development with Rails
(4th edition)

Ruby on Rails is a full-stack web framework for building web applications using the Ruby programming language. It provides tools for rapid website development including common CRUD (create, read, update, delete) functionality. While initially popular, Ruby on Rails has faced some criticisms including that it is not truly a framework or language. There are multiple virtual machines that can run Ruby code including MRI, JRuby, and IronRuby. Ruby on Rails applications can be easily deployed on platforms like Apache, Heroku, and Google App Engine.

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Initiation à Ruby on Rails

1. Initiation à Ruby on Rails Ruby on Rails @humancoders

2. @matthieusegret

3. Matthieu Segret Formateur Ruby on Rails Cofondateur de Human Coders

4. Formation

5. Un langage : Ruby

6. • Langage interprété / orienté objet • Libre - Licence Ruby et GPL • Version 1.9.3 (bientôt 2.0) • Apparu en 1995 Ruby

9. puts "Hello world" Ruby "ruby is cool".length # 12 -42.abs # 42 "Nice Day Isn't It?".downcase.split # ["nice", "day", "isn't", "it?"]

10. class Book def initialize(name) @name = name end def name @name end end Ruby book = Book.new("Programming Ruby") book.name # "Programming Ruby"

13. Un framework : Ruby on Rails

14. • Framework web écrit en Ruby • Libre - MIT • Version 3.2 (bientôt 4.0) • Apparu en 2004 Ruby on Rails

15. Convention over Configuration

16. DRY (Don’t Repeat Yourself)

17. Projet : MyNotes

18. Projet : MyNotes $ rails new MyNotes • Créer un nouveau projet $ cd MyNotes $ rails server• Démarrer le serveur

20. View Controller Model Routing

22. CRUD

23. Create Read Update Delete CRUD

24. Ressource : notes notes id integer title varchar content text

25. $ rails generate scaffold note title content:text invoke active_recordcreate db/migrate/20130130171611_create_notes.rbcreate app/models/note.rbinvoke test_unitcreate test/unit/note_test.rbcreate test/fixtures/notes.ymlinvoke resource_routeroute resources :notesinvoke scaffold_controllercreate app/controllers/notes_controller.rbinvoke erbcreate app/views/notescreate app/views/notes/index.html.erbcreate app/views/notes/edit.html.erbcreate app/views/notes/show.html.erbcreate app/views/notes/new.html.erb create app/views/notes/_form.html.erb... Génération du CRUD

26. Migration

27. migration 1 migration 2 migration 3 migration 4 devise_create_users acts_as_follower create_notes add_profile_to_user s 20110720095338_ 20110718190746_ 20110715205012_ 20110605152153_ rake db:migrate rake db:rollback current .rb Migration

28. Migration class CreateNotes < ActiveRecord::Migration def change create_table :notes do |t| t.string :title t.text :content t.timestamps end end end db/migrate/20130130175117_create_notes.rb $ rake db:migrate

29. Base de données notes id integer title varchar content text

31. Modèle

32. View Controller Model Routing

33. Modèle class Note < ActiveRecord::Base end app/models/note.rb

34. Modèle : création Note.create(content: "I created Ruby", title: "Matz")

35. Modèle : mise à jour note = Note.find(1) note.content = "I love Ruby" note.save

36. Modèle : lecture Note.where(:title => "Matz").order("title ASC").limit(5)

37. Modèle : suppression Note.find(1).destroy

38. Vue

39. View Controller Model Routing

40. ERB Title: <%= @note.title %> Content: <%= @note.content %> app/views/notes/show.html.erb

41. Formulaires <%= form_for(@note) do |f| %> <%= f.label :title %> <%= f.text_field :title %> <%= f.label :content %> <%= f.text_area :content %> <%= f.submit %> <% end %>

42. Contrôleur

43. View Controller Model Routing

44. Contrôleur class NotesController < ApplicationController def show @note = Note.find(params[:id]) end end app/controllers/notes_controller.rb app/views/notes/show.html.erb Request GET /notes/1 Title: <%= @note.title %>

45. Déploiement

47. Les gems

48. Indexation Twitter NoSQL Paiement en ligne Géolocalisation Parsing Pagination Cache Tâches de fonds Upload de fichiers Facebook Authentification Localisation OAuth A/B teste LDAP

49. La commautée Française

50. Montpellier Lyon Toulouse Nantes Rennes Lille Paris Sophia Antipolis Strasbourg Marseille Compiegne Bordeaux

51. Aller plus loin

53. Programming Ruby 1.9 (3rd edition) Agile Web Development with Rails (4th edition)

55. Formation

56. @humancoders Merci !