Présentation donnée lors du salon Solutions Linux 2011. Animée par Simon Courtois, Expert en Open Source

1. Les nouveautés de Rails 3
Simon COURTOIS
Expert en Open-Source
scourtois@linagora.com
1 WWW.LINAGORA.COM

2. La commande rails
Rails 2 Rails 3
rails myapp rails new myapp
./script/generate rails g
./script/console rails c
./script/server rails s
./script/dbconsole rails db
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3. La commande rails
• --skip-activerecord, -O .gitignore
• --skip-test-unit, -T
.bundle
• --skip-prototype, -J db/*.sqlite3
log/*.log
tmp/
• --skip-git, -G ???
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4. Bundler
Rails 2
Rails::Initializer.run do |config|
... config.gem 'haml' config.gem 'coderay',
:version => '~>0.9.7' ...end
config/environment.rb
Rails 3
source 'http://rubygems.org'gem 'rails', '3.0.6'gem 'haml'gem
'coderay', '~> 0.9.7'group :development, :test do gem
'cucumber-rails'
end
Gemfile
bundle install
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5. ActiveRelation
Rails 2
@articles = Article.find(:all, :conditions => {:published => true})
¬ requête immédiate
¬ retourne un tableau d’articles
Rails 3
@articles = Article.where(:published => true)
¬ pas de requête
¬ retourne un objet ActiveRecord::Relation
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6. ActiveRelation
@articles = Article.where(:published => true)
if params[:order]
@articles = @articles.order(params[:order])
end
@articles.each do |article|
...
end
requête effectuée
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7. ActiveRelation
@articles = Article.where(:published => true)
@articles = @articles.order(params[:order])
@articles.each do |article|
...
end
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8. ActiveRelation
@articles = Article.where(:published => true).order(params[:order])
@articles.each do |article|
...
end
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9. ActiveRelation
articles = Article.order(params[:order])
@published = articles.where(:published => true)
@unpublished = articles.where(:published => false)
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10. ActiveRelation
@published = articles.published
@unpublished = articles.unpublished
class Article < ActiveRecord::Base
named_scope :published, :conditions => {:published => true}
Rails 2 named_scope :unpublished, :conditions => {:published => false}
end
class Article < ActiveRecord::Base
scope :published, where(:published => true)
Rails 3 scope :unpublished, where(:published => false)
end
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11. ActiveRelation
where(:conditions) all
having(:conditions) first
select last
group
order
limit
offset
joins
includes(:include)
lock
readonly
from
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12. ActiveRelation
Rails 2
Article.find(:all, :conditions => {:author => “Bob”}, :includes => :comments,
:order => “title”, :limit => 10)
Rails 3
Article.where(:author => “Bob”).includes(:comments).order(“title”).limit(10).all
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13. ActiveController
Rails 2 Rails 3
class ArticlesController < ApplicationController class ArticlesController < Applic...
def index respond_to :html, :xml
@users = User.all
def index
respond_to do |format| @users = User.all
format.html respond_with(@users)
format.xml { render :xml => @users.to_xml } end
end
end def show
@user = User.find(params[:id])
def show respond_with(@user)
@user = User.find(params[:id]) end
end
respond_to do |format|
format.html
format.xml { render :xml => @user }
end
end
end
flash[:notice] = “Article created” redirect_to @article,
redirect_to @article :notice => “Article created”
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14. Le routing
Rails 2 Rails 3
ActionController::Routing::Routes.draw do |map| Myapp::Application.routes.draw do |map|
map.resources :articles resources :articles
end end
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15. Le routing
Rails 2 Rails 3
ActionController::Routing::Routes.draw do |map| Myapp::Application.routes.draw do |map|
map.resources :articles, resources :articles do
:member => { :preview => :post }, member do
:collection => { :archived => :get } post :preview
end end
collection do
get :archived
end
end
end
Myapp::Application.routes.draw do |map|
resources :articles do
post :preview, :on => :member
get :archived, :on => :collection
end
end
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16. Le routing
Rails 2 Rails 3
ActionController::Routing::Routes.draw do |map| Myapp::Application.routes.draw do |map|
map.resources :articles do |article| resources :articles do
article.resources :comments resources :comments
end end
end end
ActionController::Routing::Routes.draw do |map| Myapp::Application.routes.draw do |map|
map.connect “login”, match “login” => “session#new”
:controller => “session”, end
:action => “new”
end
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17. Le routing
Rails 2 Rails 3
ActionController::Routing::Routes.draw do |map| Myapp::Application.routes.draw do |map|
map.login “login”, match “login” => “session#new”, :as => :login
:controller => “session”, end
:action => “new”
end
ActionController::Routing::Routes.draw do |map| Myapp::Application.routes.draw do |map|
map.root :controller => “articles”, root :to => “users#index”
:action => “index” end
end
ActionController::Routing::Routes.draw do |map| Myapp::Application.routes.draw do |map|
map.connect “:controller/:action/:id” match “:controller(/:action(/:id(.:format)))”
map.connect “:controller/:action/:id.:format” end
end
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18. Le routing
Rails 2
ActionController::Routing::Routes.draw do |map|
map.connect ‘/articles/:year/:month/:day’, :controller => “articles”, :action => “index”
map.connect ‘/articles/:year/:month’, :controller => “articles”, :action => “index”
map.connect ‘/articles/:year’, :controller => “articles”, :action => “index”
end
Rails 3
Myapp::Application.routes.draw do |map|
match “/articles(/:year(/:month(/:day)))” => “articles#index”
end
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19. Le routing
Rails 2
ActionController::Routing::Routes.draw do |map|
map.connect ‘/articles/:year’, :controller => “articles”, :action => “index”,
:conditions => { :method => :get }
end
Rails 3
Myapp::Application.routes.draw do |map|
match “/articles/:year” => “articles#index”, :via => :get
end
Myapp::Application.routes.draw do |map|
get “/articles/:year” => “articles#index”
end
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20. Le routing
Rails 3
Myapp::Application.routes.draw do |map|
match “signin”, :to => redirect(“/login”)
match “linagora”, :to => redirect(“http://www.linagora.com”)
end
Myapp::Application.routes.draw do |map|
get “hello” => proc { |env| [200, {}, “Hello World !”] }
get “rack_app” => MyCoolRackApp
end
RAILS_ROOT/lib/my_cool_rack_app.rb
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21. XSS et Unobstrusive JS
Rails 2 Rails 3
<%= @article.title %> # Non sécurisé <%= @article.title %> # Sécurisé
<%=h @article.title %> # Sécurisé <%=raw @article.title %> # Non sécurisé
<%= link_to_remote “Show”, :url => @article %> <%= link_to “Show”, :remote => true %>
<a href=”#” onclick=”new <a href=”/articles/1” data-remote=”true”>Show</a>
Ajax.Request(‘/articles/1’,
{asynchronous:true,evalScripts:true,parameters:‘a
uthenticity_token=’+encodeURIComponent(‘A9s...3cf
’)}); return false;”>Show</a>
<% remote_form_for(@article) do |f| %> <%= form_for(@article, :remote => true) do |f| %>
<form action=”/articles” class=”new_post” <form action=”/articles” class=”new_post”
id=”new_post” method=”post” onSubmit=”new id=”new_post” method=”post” data-remote=”true”>
Ajax.Request(‘/articles’,
{asynchronous:true,evalScripts:true,parameters:Fo
rm.serialize(this)}); return false;”>
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22. XSS et Unobstrusive JS
<%= link_to “Delete”, @article, :method => :delete %>
<a href="#" title="Delete" onclick="var f =
document.createElement('form'); f.style.display = 'none';
this.parentNode.appendChild(f); f.method = 'POST'; f.action =
Rails 2 this.href;var s = document.createElement('input');
s.setAttribute('type', 'hidden'); s.setAttribute('name',
'authenticity_token'); s.setAttribute('value', 'XXX...XXX');
f.appendChild(s);f.submit(); return false;">Delete</a>
Rails 3 <a href=”/articles/1” data-method=”delete” rel=”nofollow”>Delete</a>
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23. XSS et Unobstrusive JS
<%= link_to “Delete”, @article, :method => :delete,
:confirm => “Are you sure ?” %>
<a href="#" title="Delete" onclick="if (confirm(“Are you sure ?”))
{var f = document.createElement('form'); f.style.display = 'none';
this.parentNode.appendChild(f); f.method = 'POST'; f.action =
Rails 2 this.href;var s = document.createElement('input');
s.setAttribute('type', 'hidden'); s.setAttribute('name',
'authenticity_token'); s.setAttribute('value', 'XXX...XXX');
f.appendChild(s);f.submit();} return false;">Delete</a>
Rails 3 <a href=”/articles/1” data-method=”delete”
data-confirm=”Are you sure ?” rel=”nofollow”>Delete</a>
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24. Prochaine étape
Rails 3.1
• jQuery
• CoffeeScript
• Sass
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25. Prochaine étape
number = 42 if true
square = (x) -> x * x
alert "Hello" if number?
list = [1, 2, 3, 4]
Rails 3.1
squares = (square num for num in list)
var number, square, list, squares, num;
• jQuery if (true) {
number = 42;
}
• CoffeeScript square = function(x) {
return x * x;
};
if (typeof number !== "undefined" && number !== null) {
• Sass }
alert("Hello");
squares = (function() {
var _i, _len, _results;
_results = [];
for (_i = 0, _len = list.length; _i < _len; _i++) {
num = list[_i];
_results.push(square(num));
}
return _results;
})();
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26. Prochaine étape
table.hl
margin: 2em 0
td.ln
text-align: right
Rails 3.1
li
font:
family: serif
weight: bold
jQuery
size: 1.2em
•
• CoffeeScript table.hl {
margin: 2em 0;
}
table.hl td.ln {
• Sass }
text-align: right;
li {
font-family: serif;
font-weight: bold;
font-size: 1.2em;
}
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27. Prochaine étape
table.hl
margin: 2em 0
td.ln
text-align: right
Rails 3.1
li
font:
family: serif
weight: bold
jQuery
size: 1.2em
•
• CoffeeScript table.hl {
margin: 2em 0;
}
table.hl td.ln {
• Sass }
text-align: right;
li {
font-family: serif;
font-weight: bold;
font-size: 1.2em;
}
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28. Merci de votre attention
Cont act :
LINAGORA - Siège social
80, rue Roque de Fillol
92800 PUTEAUX
FRANCE
Tél. : 0 810 251 251 (t arif local)
Fax : +33 (0)1 46 96 63 64
Mail : info@linagora.com
Web : www.linagora.com
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