palestra "do php ao rails" - focai

Almir 'm3nd3s'Almir 'm3nd3s'http://www.almirmendes.comhttp://www.almirmendes.com

m3nd3s@gmail.com m3nd3s@gmail.com

http://www.flickr.com/photos/tswicegood/3483353187http://www.flickr.com/photos/bellalago/4874839499/

It's meIt's me

http://www.flickr.com/photos/chealion/2349587639

http://www.flickr.com/photos/rdohms/4103026062

http://www.flickr.com/photos/hlegius/3544338710

Oi!

Por que mudar?Por que mudar?

Agilidade Agilidade

http://www.flickr.com/photos/eriwst/3448608210

10.times { |i| puts i }

10.class=> Fixnum

Dojo Dojo

http://reddevnews.com/articles/2007/11/01/testdriven-development-tdd.aspx

Continuous Integration Continuous Integration

TimeTimeVocê quebrou

o build?

Ufa! Me livrei dessa

GambiarrasGambiarras

http://www.flickr.com

/photos/ricardo_

ferreira/233163

380/

<?<?phpphp

echoecho “2Patos”“2Patos” ++ “1Galinha”“1Galinha” ++

“2Codornas”“2Codornas” ==== “5 Pássaros?”“5 Pássaros?”

?>?>

// // Acredite! Isto resulta em 1 (inteiro)Acredite! Isto resulta em 1 (inteiro)

Mercado Mercado

Então, o que é o tal Então, o que é o tal Ruby on Rails?Ruby on Rails?

A web framework that's optimized for A web framework that's optimized for programmer happiness and sustainable programmer happiness and sustainable productivity. productivity.

http://www.flickr.com/photos/benmillett/306074038

It lets you write beautiful code by It lets you write beautiful code by favoring convention over configuration.favoring convention over configuration.

http://www.flickr.com/photos/arcticpuppy/4784727073

MVCMVC http://www.codinguide.com/2010/04/mvc-pattern.html

Exemplo Exemplo

Imagine que eu precise gerenciar usuários, estes teriam apenas nome e

e-mail.

$ gem install rails

$ rails new meu_projeto

Instala a gem rails

Cria um novo projeto

$ cd meu_projeto

$ rails g model usuario nome:string email:string

Migration Migration

class CreateUsuarios < ActiveRecord::Migration

def self.up

create_table :usuarios do |t|

t.string nome

t.string email

t.timestamps

end

dnd

def self.down

drop_table :usuarios

end

end

Migration Migration

$ rake db:migrate

class Usuario < ActiveRecord::Base

end

Model Model

app/models/usuario.rb

u.save?()

Model Model

E muito mais...

u.update_attributes()

u.destroy()

u.valid?()u.valid?()

u.errors

u.new_record?

u.meu_atributo_x

Usuario.all

Usuario.last(5)

Usuario.find(12)

Usuario.new

Usuario.query

Usuario.first()

class UsuariosController < ApplicationController

def index

@usuarios = Usuario.all

end

end

Controller Controller

app/controllers/usuarios_controller.rb

ViewView

<ul>

<% @usuarios.each do |u| %>

<%= u.nome %>

<% end %>

</ul>

app/views/usuarios/index.html.rb

Action

GemsGems

http://rubygems.org/http://rubygems.org/

Por onde começar?Por onde começar?

http://railsforzombies.org/http://railsforzombies.org/

http://rubyonrails.org/screencasts/rails3http://rubyonrails.org/screencasts/rails3

http://railscasts.com/http://railscasts.com/

http://guides.rubyonrails.org/http://guides.rubyonrails.org/

RailsRumbleRailsRumble

www.rockandrails.com.brwww.rockandrails.com.br

Realização

Almir 'm3nd3s'Almir 'm3nd3s'@m3nd3s@m3nd3shttp://www.almirmendes.comhttp://www.almirmendes.comalmir.mendes@giran.com.bralmir.mendes@giran.com.br