Ecossistema Rails Campus Party 09

Ecossistema Rails
Desenvolvedores Web 2.0

Tuesday, January 20, 2009

AkitaOnRails


http://www.akitaonrails.com

http://www.locaweb.com.br/rails

“Matz”

1993
http://www.ruby-lang.org

“Prag Dave”

2001
http://www.rubycentral.com/book/
http://www.pragprog.com/titles/ruby3/programming-ruby-1-9

“DHH”

2004
http://www.rubyonrails.org
http://www.loudthinking.com

http://rubyonrails.org/screencasts

“Tornar as coisas simples
fáceis e as coisas
complexas possíveis”
Filosoﬁa Ruby


http://www.levenez.com/lang/

Ruby on Rails


RUBY

http://guides.rails.info/

ActiveSupport
Rails

RUBY


ActionController
ActionPack
ActionView

ActiveSupport
Rails

RUBY


ActiveRecord
ActionController
ActionPack
ActionView

ActiveSupport
Rails

RUBY


ActionMailer
ActiveRecord
ActionController
ActionPack
ActionView

ActiveSupport
Rails

RUBY


ActiveResource ActionWebService

ActionMailer
ActiveRecord
ActionController
ActionPack
ActionView

ActiveSupport
Rails

RUBY


RSpec
describe Product do
include ProductSpecHelper

before(:each) do
@product = Product.new
end

it quot;should not be valid when emptyquot; do
@product.should_not be_valid
end

it quot;should be valid when having correct informationquot; do
@product.attributes = valid_product_attributes
@product.should be_valid
end
end


RSpec
describe Product do
include ProductSpecHelper

before(:each) do
@product = Product.new
end

it quot;should not be valid when emptyquot; do
rake spec
@product.should_not be_valid
end

it quot;should be valid when having correct informationquot; do
@product.attributes = valid_product_attributes
@product.should be_valid
end
end


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


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


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


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


Views ERB
<div id=quot;product-listingquot;>
<%= breadcrumbs(@taxon) %>
<br/>
<%= render :partial => quot;shared/products.html.erbquot;,
:locals => {:products => @products, :taxon => @taxon } %>
</div>

<% content_for :sidebar do %>
<td id=quot;shop-by-colquot; valign=quot;topquot;>
<%= render :partial => quot;shared/taxonomiesquot; %>
</td>
<% end %>

<%= render :partial => 'shared/paginate',
:locals => {:collection => @products, :options => {}}
unless @products.empty? %>


Views HAML

#product-listing
=breadcrumbs(@taxon)
%br
=render :partial => quot;shared/products.html.erbquot;,
:locals => {:products => @products, :taxon => @taxon}

-content_for :sidebar do
%td#shop-by-col(:valign => quot;topquot;)
=render :partial => quot;shared/taxonomiesquot;

=render :partial => 'shared/paginate',
:locals => {:collection => @products, :options => {}}
unless @products.empty?


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


Rotas RESTFul

ActionController::Routing::Routes.draw do |map|
GET /products/new
map.connect ':controller/service.wsdl', :action => 'wsdl'
GET /products
map.resources :products,
:member => POST /products
{:change_image => :post}
map.resources :addresses
GET /products/1
map.resources :orders,
GET /products/1/edit
:has_many => [:line_items]

map.namespacePUT /products/1
:admin do |admin|
DESTROY /products/1
admin.resources :users
admin.resources :products
end
end


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
t.remove :type
end
rename_table :configurations, :app_configurations
end
end


Migrations

class RenameAppConfiguration < ActiveRecord::Migration
def self.up
rename_table :app_configurations, :configurations
t.string :type
end
rake db:migrate
end

def self.down
t.remove :type
end
rename_table :configurations, :app_configurations
end
end


“Beautiful Code”


http://weblog.jamisbuck.org/2008/11/9/legos-play-doh-and-programming
http://weblog.jamisbuck.org/2008/11/29/recovering-from-enterprise-video-available

11 mil
classes!

46 só de
Collections!

http://weblog.jamisbuck.org/2008/11/9/legos-play-doh-and-programming
http://weblog.jamisbuck.org/2008/11/29/recovering-from-enterprise-video-available

• Classes:
• Modules: • Array
• Enumerable • Hash
• Comparable • Set
• Sorted Set


1.400 Classes:
•
classesArray
• Modules: •
• Enumerable • Hash
• Comparable 6 de Set
só •
• Sorted
Collections! Set


• Convention over Conﬁguration
• Don’t Repeat Yourself
• You Ain’t Gonna Need It
• Automação
• Boas Práticas
• Código Bonito
• Ferramentas Simples


http://macromates.com
http://www.apple.com/macbook

Mitos

http://www.loudthinking.com/posts/29-the-rails-myths

Ruby tem
marketshare
menor que Java
ou PHP


Qual foi o concurso?

Qual foi o prêmio?

http://gilesbowkett.blogspot.com/2009/01/why-hacker-news-thinks-php-won.html

http://www.google.com/trends?q=ruby+rails%2C+python+django%2C+grails%2C+zend

http://www.google.com/trends?q=microsoft+windows%2C
+linux&ctab=0&geo=all&date=all&sort=0

http://www.roughlydrafted.com/2008/10/25/apple-earnings-proﬁts-and-cash-embarrass-
microsoft-2/

Martin Fowler

http://www.thoughtworks.com/how-we-do-it/ruby.html

Agile

http://pragdave.pragprog.com/

Mitos


Rails não Escala


FUD: http://www.techcrunch.com/2008/05/22/twitter-at-scale-will-it-work/

To put things into
perspective, though,
Friendster was written in
Java to start, and switched to
PHP. Myspace was written in
ColdFusion and transitioned
to ASP.NET.

When people run into
problems scaling sites they
often think that the language
is the problem, but I think
Blaine Cook
it’s rarely the case.

http://www.akitaonrails.com/2008/6/17/chatting-with-blaine-cook-twitter

http://www.akitaonrails.com/2008/6/17/chatting-with-blaine-cook-twitter

“The New York Times used Ruby on Rails to pull
together, analyze and display election results in
near real time on one of its busiest Web
trafﬁc days ever. ”

http://www.computerworld.com.au/article/268003/ruby_rails_rolls_into_enterprise?fp=16&fpid=1


http://www.computerworld.com/action/article.do?
command=viewArticleBasic&articleId=9120778

“They serve up 23 million visitors a month. The conversion resulted in 20,000
lines of Ruby code instead of 125,000 lines of Java code, and most importantly
eased the difﬁculty they had in maintaining it. Once complete, and
optimized their site is now faster than before. They also completed the
rewrite in three months with four developers.”

http://www.railsonwave.com/railsonwave/2008/6/4/yellowpages-com-migrates-to-rails


http://www.akitaonrails.com/2008/11/21/rails-podcast-brasil-qcon-
special-john-straw-yellowpages-com-and-matt-aimonetti-merb
http://www.rubyonrailsexamples.com/sites-on-rails/yellowpagescom-
goes-ror/


http://www.techcrunch.com/2008/01/24/hulu-discusses-private-beta-
suggests-public-launch-time-frame/


http://www.blogblogs.com.br

Deployment de
Rails é difícil


Apache + FastCGI

LightTPD + FastCGI

Litespeed + SAPI

Apache + Mongrel

Nginx + Mongrel

Nginx + Thin


http://phusion.nl
http://www.modrails.com/

gem install passenger
passenger-install-apache2-module

http://phusion.nl
http://www.modrails.com/

Rails é mal
documentado


Geoffrey
http://www.peepcode.com

Jason e Gregg
http://railsenvy.com
http://envycasts.com

Ryan Bates
http://railscasts.com

Pratik Naik

Satish Talim
http://rubylearning.org

Peter Cooper
http://rubyinside.com
http://railsinside.com
http://rubyﬂow.com
http://jrubyinside.com
http://yorails.com

_why
http://whytheluckysti.net/

http://www.amazon.com/s/ref=nb_ss_gw?url=search-alias%3Dstripbooksﬁeld-keywords=ruby
+railsx=0y=0

Open Source


Chris Wanstrath
http://github.com

http://rubyforge.org
http://gitorious.org

http://jruby.codehaus.org
http://www.macruby.org
http://www.ironruby.net
http://ruby.gemstone.com/
http://rubini.us/

http://gettingreal.37signals.com/GR_por.php
http://aprendaaprogramar.rubyonrails.pro.br/
http://why.nomedojogo.com/
http://rubyonrails.pro.br
http://rubyonbr.org

Conferências


http://www.confreaks.com/
http://www.akitaonrails.com/railsconf2008

http://www.locaweb.com.br/railssummit
http://www.akitaonrails.com/railssummit2008

Especialista de
uma coisa só é
um amador em
todo o resto.


Obrigado!

Ecossistema Rails Campus Party 09

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