Encontro de TI - Arteccom

Ruby on Rails Ecossistema e Agilidade Wednesday, April 8, 2009

Wednesday, April 8, 2009

www.slideshare.net/akitaonrails www.akitaonrails.com Wednesday, April 8, 2009

1 Wednesday, April 8, 2009

Aplicações vs. Frameworks Wednesday, April 8, 2009

“Produtividade” “Quick’n Dirty” Mantenabilidade DÉBITO TÉCNICO Wednesday, April 8, 2009

Codificadores x Desenvolvedores Wednesday, April 8, 2009

Martin Fowler Wednesday, April 8, 2009

Agile Wednesday, April 8, 2009

AGILIDADE Wednesday, April 8, 2009

Estamos “descobrindo” maneiras melhores de desenvolver software na prática e ajudando outros a desenvolver. Wednesday, April 8, 2009

Big Design Up Front “Waterfall” (Cascata) Escopo Fechado “Change Requests” Wednesday, April 8, 2009

Ceticismo Wednesday, April 8, 2009

Winston W. Royce - 1970 Wednesday, April 8, 2009

“Eu acredito neste conceito mas a implementação descrita acima é arriscada e convida falhas.” Winston W. Royce - 1970 Wednesday, April 8, 2009

“Cargo Cult” Wednesday, April 8, 2009

“SOFT”WARE Wednesday, April 8, 2009

Agilidade NÃO é metodologia Wednesday, April 8, 2009

Agilidade são valores, cultura. Wednesday, April 8, 2009

“Matz” 1993 Wednesday, April 8, 2009

“Prag Dave” 2001 Wednesday, April 8, 2009

“DHH” 2004 Wednesday, April 8, 2009

“Tornar as coisas simples fáceis e as coisas complexas possíveis” Filosoﬁa Ruby do 80/20 Wednesday, April 8, 2009

Ruby on Rails Wednesday, April 8, 2009

RUBY Wednesday, April 8, 2009

ActiveSupport Rails RUBY Wednesday, April 8, 2009

ActionController ActionPack ActionView ActiveSupport Rails RUBY Wednesday, April 8, 2009

ActiveRecord ActionController ActionPack ActionView ActiveSupport Rails RUBY Wednesday, April 8, 2009

ActionMailer ActiveRecord ActionController ActionPack ActionView ActiveSupport Rails RUBY Wednesday, April 8, 2009

ActiveResource ActionWebService ActionMailer ActiveRecord ActionController ActionPack ActionView ActiveSupport Rails RUBY Wednesday, April 8, 2009

Model class Product < ActiveRecord::Base after_create :set_initial_inventory has_many :variants, :dependent => :destroy has_many :images, :as => :viewable, :order => :position, :dependent => :destroy has_many :properties, :through => :product_properties belongs_to :tax_category validates_presence_of :name validates_presence_of :master_price validates_presence_of :description make_permalink :with => :name, :field => :permalink end Wednesday, April 8, 2009

Model class Product < ActiveRecord::Base after_create :set_initial_inventory has_many :variants, :dependent => :destroy has_many :images, :as => :viewable, :order => :position, :dependent => :destroy has_many :properties, :through => :product_properties Product.find(1) belongs_to :tax_category validates_presence_of :name validates_presence_of :master_price validates_presence_of :description make_permalink :with => :name, :field => :permalink end Wednesday, April 8, 2009

Views ERB <div id=\"product-listing\"> <%= breadcrumbs(@taxon) %> <br/> <%= render :partial => \"shared/products.html.erb\", :locals => {:products => @products, :taxon => @taxon } %> </div> <% content_for :sidebar do %> <td id=\"shop-by-col\" valign=\"top\"> <%= render :partial => \"shared/taxonomies\" %> </td> <% end %> <%= render :partial => 'shared/paginate', :locals => {:collection => @products, :options => {}} unless @products.empty? %> Wednesday, April 8, 2009

Views HAML #product-listing =breadcrumbs(@taxon) %br =render :partial => \"shared/products.html.erb\", :locals => {:products => @products, :taxon => @taxon} -content_for :sidebar do %td#shop-by-col(:valign => \"top\") =render :partial => \"shared/taxonomies\" =render :partial => 'shared/paginate', :locals => {:collection => @products, :options => {}} unless @products.empty? Wednesday, April 8, 2009

Controller class UsersController < Spree::BaseController resource_controller before_filter :initialize_extension_partials actions :all, :except => [:index, :destroy] show.before do @orders = Order.checkout_completed(true) .find_all_by_user_id(current_user.id) end create.after { self.current_user = @user } create.response do |wants| wants.html { redirect_back_or_default(products_path) } end end Wednesday, April 8, 2009

Controller class UsersController < Spree::BaseController resource_controller before_filter :initialize_extension_partials actions :all, :except => [:index, :destroy] show.before do @orders = Order.checkout_completed(true) /users/1 .find_all_by_user_id(current_user.id) end create.after { self.current_user = @user } create.response do |wants| wants.html { redirect_back_or_default(products_path) } end end Wednesday, April 8, 2009

Rotas RESTFul ActionController::Routing::Routes.draw do |map| map.connect ':controller/service.wsdl', :action => 'wsdl' map.resources :products, :member => {:change_image => :post} map.resources :addresses map.resources :orders, :has_many => [:line_items] map.namespace :admin do |admin| admin.resources :users admin.resources :products end end Wednesday, April 8, 2009

Rotas RESTFul ActionController::Routing::Routes.draw do |map| GET /products/new map.connect ':controller/service.wsdl', :action => 'wsdl' GET /products map.resources :products, POST /products :member => {:change_image => :post} GET /products/1 map.resources :addresses map.resources :orders, GET /products/1/edit :has_many => [:line_items] PUT /products/1 map.namespace :admin do |admin| DESTROY /products/1 admin.resources :users admin.resources :products end end Wednesday, April 8, 2009

Migrations class RenameAppConfiguration < ActiveRecord::Migration def self.up rename_table :app_configurations, :configurations change_table :configurations do |t| t.string :type end end def self.down change_table :configurations do |t| t.remove :type end rename_table :configurations, :app_configurations end end Wednesday, April 8, 2009

Migrations class RenameAppConfiguration < ActiveRecord::Migration def self.up rename_table :app_configurations, :configurations change_table :configurations do |t| t.string :type end rake db:migrate end def self.down change_table :configurations do |t| t.remove :type end rename_table :configurations, :app_configurations end end Wednesday, April 8, 2009

RSpec describe Product do include ProductSpecHelper before(:each) do @product = Product.new end it \"should not be valid when empty\" do @product.should_not be_valid end it \"should be valid when having correct information\" do @product.attributes = valid_product_attributes @product.should be_valid end end Wednesday, April 8, 2009

RSpec describe Product do include ProductSpecHelper before(:each) do @product = Product.new end it \"should not be valid when empty\" do rake spec @product.should_not be_valid end it \"should be valid when having correct information\" do @product.attributes = valid_product_attributes @product.should be_valid end end Wednesday, April 8, 2009

Cucumber Funcionalidade: Criar Post no Blog Para conseguir divulgar minhas idéias Como um blogger Eu quero conseguir criar um post no meu blog Cenário: Criando um novo Post Dado que estou na página de Administração E que eu preencho o formulário de novo post Então quero conseguir visualizar o título do novo post na homepage Wednesday, April 8, 2009

“Beautiful Code” Wednesday, April 8, 2009

11 mil classes! 46 só de Collections! Wednesday, April 8, 2009

• Classes: • • Modules: Array • • Enumerable Hash • • Comparable Set • Sorted Set Wednesday, April 8, 2009

1.400 Classes: • classes Array • • Modules: • • Hash Enumerable só 6 de Set • • Comparable Collections! Set • Sorted Wednesday, April 8, 2009

• Convention over Conﬁguration • Don’t Repeat Yourself • You Ain’t Gonna Need It • Boas Práticas • Escalabilidade • Segurança • Automação Wednesday, April 8, 2009

Mitos Wednesday, April 8, 2009

Rails não Escala Wednesday, April 8, 2009

Para colocar as coisas em perspectiva, o Friendster foi escrito em Java no começo, mas mudou para PHP. O MySpace foi escrito em ColdFusion e transicionou para ASP.NET. Quando as pessoas caem em problemas de escalabilidade, costumam pensar sempre que o problema é a linguagem, mas eu acho que esse raramente é o Blaine Cook caso. http://www.akitaonrails.com/2008/6/17/chatting-with-blaine-cook-twitter Wednesday, April 8, 2009

“O New York Times usou Ruby on Rails para juntar, analisar e mostrar resultados das eleições quase em real time em um dos dias mais congestionados de tráfego que já se viu. ” http://www.computerworld.com.au/article/268003/ruby_rails_rolls_into_enterprise?fp=16&fpid=1 Wednesday, April 8, 2009

“Eles servem mais de 23 milhões de visitantes por mês. A conversão resultou em 20 mil linhas de código Ruby em vez de 125 mil de Java, e mais importante, facilitou a dificuldade que tinham em manter isso. Uma vez finalizado e otimizado o site deles agora é mais rápido que antes. Eles também finalizaram a re-escrita em 3 meses com 4 desenvolvedores.” http://www.railsonwave.com/railsonwave/2008/6/4/yellowpages-com-migrates-to-rails Wednesday, April 8, 2009

Mitos Wednesday, April 8, 2009

Rails é mal documentado Wednesday, April 8, 2009

Geoffrey Wednesday, April 8, 2009

Jason e Gregg Wednesday, April 8, 2009

Pratik Naik Wednesday, April 8, 2009

Satish Talim Wednesday, April 8, 2009

Peter Cooper Wednesday, April 8, 2009

_why Wednesday, April 8, 2009

Ryan Bates Wednesday, April 8, 2009

Open Source Wednesday, April 8, 2009

Chris Wanstrath Wednesday, April 8, 2009

“Especialista de uma coisa só é um amador em todo o resto.” Wednesday, April 8, 2009

Obrigado! fabio.akita@locaweb.com.br Wednesday, April 8, 2009

Encontro de TI - Arteccom

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