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Nos trilhos do Ruby
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Daniel Cavalcante
February 03, 2016
Programming
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Nos trilhos do Ruby
Palestra ministrada na XIV semana da computação da UFPB.
Daniel Cavalcante
February 03, 2016
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Transcript
Nos trilhos do Ruby @danielcdesouza
Daniel Cavalcante
None
None
Rails?
! Framework Web Criado em 2003
David Heinemeier Hansson
" Ruby Linguagem de programação
# MVC Arquitetura
$ Don’t Repeat Yourself Não se repita (DRY)
% REST Organizar sua aplicação com recursos e verbos HTTP
& Convention over Configuration Framework baseado em convenções
Componentes
' Action Controller
/my_app ../app ../controllers ../books_controllers.rb controllers
class BooksController < ApplicationController def index @books = Book.all end
def show @book = Book.find(params[:id]) end end books_controller.rb
# Action View
/my_app ../app ../controllers ../books_controllers.rb ../views ../books ../index.html.erb ../show.html.erb views
<h2>My books</h2> <% @books.each do |book| %> <%= book.title %>
<%= book.author %> <% end %> index.html.erb
Active Record
class Book < ActiveRecord::Base validates_presence_of :title, :author, :user end book.rb
class BooksController < ApplicationController def index @books = Book.all end
def show @book = Book.find(params[:id]) end end books_controller.rb
# Active Resource
routes Rails.application.routes.draw do get ‘/books’ => ‘books#index’ get ‘/book’ =>
‘books#show’ end
routes Rails.application.routes.draw do resources :books end
•Action Controller •Action View •Active Record •Active Resource •Action Mailer
•Railties •Active Support outros componentes …
instalação Instale o Ruby on Rails $ gem install rails
criando o app Criando seu primeiro projeto $ rails new
my_app
arquivos gerados pelo Rails
gemfile source ‘https://rubygems.org' gem 'rails', '4.2.3' gem 'pg' gem 'sass-rails',
'~> 5.0' gem 'uglifier', '>= 1.3.0' gem 'coffee-rails', '~> 4.1.0' gem 'jquery-rails' gem 'turbolinks' gem 'jbuilder', '~> 2.0’ gem 'sdoc', '~> 0.4.0', group: :doc group :development, :test do gem 'byebug' gem 'web-console', '~> 2.0' end
gems Baixar gems $ bundle install
servidor Inicie o servidor $ rails server
acesse localmente Acesse a página da aplicação http://localhost:3000
Outros diferenciais
Jampa Ruby
) Obrigado *@danielcdesouza