Les nouveautés de Rails 3

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

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 db2 /25

La commande rails • --skip-activerecord, -O .gitignore • --skip-test-unit, -T .bundle • --skip-prototype, -J db/*.sqlite3 log/*.log tmp/ • --skip-git, -G ???3 /25

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.orggem rails, 3.0.6gem hamlgem coderay, ~> 0.9.7group :development, :test do gem cucumber-rails end Gemfile bundle install4 /25

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::Relation5 /25

ActiveRelation @articles = Article.where(:published => true) if params[:order] @articles = @articles.order(params[:order]) end @articles.each do |article| ... end requête effectuée6 /25

ActiveRelation @articles = Article.where(:published => true) @articles = @articles.order(params[:order]) @articles.each do |article| ... end7 /25

ActiveRelation @articles = Article.where(:published => true).order(params[:order]) @articles.each do |article| ... end8 /25

ActiveRelation articles = Article.order(params[:order]) @published = articles.where(:published => true) @unpublished = articles.where(:published => false)9 /25

ActiveRelation @published = articles.published @unpublished = articles.unpublished class Article 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 true} Rails 2 named_scope :unpublished, :conditions =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 true) Rails 3 scope :unpublished, where(:published =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) end10/25

ActiveRelation where(:conditions) all having(:conditions) first select last group order limit offset joins includes(:include) lock readonly from11/25

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).all12/25

ActiveController Rails 2 Rails 3class 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 endendflash[:notice] = “Article created” redirect_to @article,redirect_to @article :notice => “Article created”13/25

Le routing Rails 2 Rails 3ActionController::Routing::Routes.draw do |map| Myapp::Application.routes.draw do |map| map.resources :articles resources :articlesend end14/25

Le routing Rails 2 Rails 3ActionController::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 :previewend 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 end15/25

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 end17/25

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” end18/25

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” end19/25

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.rb20/25

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:‘authenticity_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:Form.serialize(this)}); return false;”> 21/25

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>22/25

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>23/25

Prochaine étape Rails 3.1 • jQuery • CoffeeScript • Sass24/25

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; })();25/25

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; }26/25

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; }27/25

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Les nouveautés de Rails 3

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