Initiation à Ruby on Rails

@humancoders

@matthieusegret

Matthieu Segret

Formateur Ruby on Rails

Cofondateur de Human Coders

Formation

Un langage : Ruby

•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 endend

Ruby

book = Book.new("Programming Ruby")

book.name # "Programming Ruby"

Un framework : Ruby on Rails

•Framework web écrit en Ruby

•Libre - MIT

•Version 3.2 (bientôt 4.0)

•Apparu en 2004

Ruby on Rails

Convention over

Configuration

DRY

(Don’t Repeat Yourself)

Projet : MyNotes

Projet : MyNotes

$ rails new MyNotes•Créer un nouveau projet

$ cd MyNotes

$ rails server•Démarrer le serveur

View

Controller

Model

Routing

CRUD

Create

Read

Update

Delete

CRUD

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.erbcreate app/views/notes/_form.html.erb...

Génération du CRUD

Migration

migration 1

migration 2

migration 3

migration 4

devise_create_users

acts_as_follower

create_notes

add_profile_to_users20110720095338_

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

View

Controller

Model

Routing

Modèle

class Note < ActiveRecord::Baseend

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

Vue

View

Controller

Model

Routing

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

View

Controller

Model

Routing

Contrôleur

class NotesController < ApplicationController def show @note = Note.find(params[:id]) endend

app/controllers/notes_controller.rb

app/views/notes/show.html.erb

Request

GET /notes/1

<p> <b>Title:</b> <%= @note.title %></p>

Déploiement

Les gems

Indexation

Twitter

NoSQLPaiement en ligne

Géolocalisation

ParsingPagination

Cache

Tâches de fonds

Upload de fichiers

FacebookAuthentification

LocalisationOAuth

A/B teste

LDAP

La commautéeFrançaise

Montpellier

Lyon

Toulouse

Nantes

Rennes

Lille

Paris

Sophia Antipolis

Strasbourg

Marseille

Compiegne

Bordeaux

Aller plus loin

Programming Ruby 1.9 (3rd edition)

Agile Web Development with Rails (4th edition)

Formation

@humancodersMerci !