Post on 28-Jul-2020
OSCON 2010
Upgrading to
Rails 3Thursday, July 22, 2010
OSCON 2010
Michael Bleigh@mbleigh
Thursday, July 22, 2010
Thursday, July 22, 2010
OSCON 2010
Jeremy McAnally’sRails Upgrade Handbook
bit.ly/railsupgrade
Thursday, July 22, 2010
OSCON 2010
Rails 3 isDifferent
Thursday, July 22, 2010
OSCON 2010
Rails 3 is aBig #ange
Thursday, July 22, 2010
OSCON 2010
Why the hell should I bother?
Thursday, July 22, 2010
OSCON 2010
Modularity
Thursday, July 22, 2010
OSCON 2010
Rails 2.3 StackActiveRecord
ActiveSupport
ActiveResource
ActionPack
Test::Unit
Thursday, July 22, 2010
OSCON 2010
Rails 3 Ecosystem
ActiveSupport
ActiveResource
ActionPack
ActiveModel
ActiveRecordDataMapper
MongoMapper
RSpecTest::Unit
Bacon
Thursday, July 22, 2010
OSCON 2010
Rails 2.3 Controller
ActionController::Base
ApplicationController
YourController
Thursday, July 22, 2010
OSCON 2010
Rails 3 Controller
ActionController::Base
ApplicationController
YourController
AbstractController::Base
ActionController::Metal
Thursday, July 22, 2010
OSCON 2010
Less Monkeypatching
Thursday, July 22, 2010
OSCON 2010
Security
darwinbell via Flickr
Thursday, July 22, 2010
OSCON 2010
small change,
big impact
Thursday, July 22, 2010
OSCON 2010
HTML is escapedby default.
Thursday, July 22, 2010
<!-- Rails 2.3 --><div class='comment'> <%= comment.body %></div>
<!-- Rails 3 --><div class="comment"> <%= comment.body.html_safe %></div>
<!-- Rails 3 (alternate) --><div class="comment"> <%=raw comment.body %></div>
Thursday, July 22, 2010
OSCON 2010
It’s a good thing.TM
Thursday, July 22, 2010
OSCON 2010
New Apis
Thursday, July 22, 2010
OSCON 2010
$e Router
Thursday, July 22, 2010
OSCON 2010
Rack Everywhere!
Thursday, July 22, 2010
OSCON 2010
Fancy New DSL
Thursday, July 22, 2010
OSCON 2010
More Powerful
Thursday, July 22, 2010
# Rails 2.3map.connect '/help', :controller => 'pages', :action => 'help'
# Rails 3match '/help', :to => 'pages#help'
# Rails 2.3map.resources :users do |users| users.resources :commentsend
# Rails 3resources :users do resources :commentsend
Thursday, July 22, 2010
# Rails 2.3with_options :path_prefix => 'admin', :name_prefix => 'admin' do |admin| admin.resources :users admin.resources :postsend
# Rails 3namespace :admin resources :users resources :postsend
Thursday, July 22, 2010
# Rails 3
constraints(:subdomain => 'api') do resources :statuses resources :friendsend
match '/hello', :to => lambda{ |env| [200, {'Content-Type' => 'text/plain'}, 'Hello World']}
match '/other-site', :to => redirect('http://url.com')
Thursday, July 22, 2010
OSCON 2010
A%ionMailer
Thursday, July 22, 2010
OSCON 2010
It’s (mostly) justa controller.
Thursday, July 22, 2010
class Notifier < ActionMailer::Base default :from => "mikel@example.org"
def welcome_email(user) @name = user.name attachments['terms.pdf'] = File.read( Rails.root.join('docs/terms.pdf') ) mail(:to => user.email, :subject => "G’day Mate!") endend
Thursday, July 22, 2010
class UsersController < ApplicationController respond_to :html def create @user = User.new(params[:user])
Notifier.welcome_email(@user).deliver if @user.save respond_with @user endend
Thursday, July 22, 2010
OSCON 2010
Bundler
Thursday, July 22, 2010
OSCON 2010
Caution: Entering Controversy
Thursday, July 22, 2010
# Rails 2.3
# environment.rbconfig.gem 'acts-as-taggable-on'config.gem 'ruby-openid', :lib => false
# test.rbconfig.gem 'rspec'config.gem 'cucumber'
# Rails 3
# Gemfilegem 'acts-as-taggable-on'gem 'ruby-openid', :require => false
group :test do gem 'rspec' gem 'cucumber'end
Thursday, July 22, 2010
OSCON 2010
Dependency Resolver
Thursday, July 22, 2010
OSCON 2010
A%iveRelation
Thursday, July 22, 2010
OSCON 2010
Like named scopes, only more so.
Thursday, July 22, 2010
# Rails 2.3
Book.all( :conditions => {:author => "Chuck Palahniuk"}, :order => "published_at DESC", :limit => 10)
# Rails 3
Book.where(:author => "Chuck Palahniuk") .order("published_at DESC").limit(10)
Thursday, July 22, 2010
Inherently Chainable
Thursday, July 22, 2010
# Rails 3
def index @books = Book.where(:author => params[:author]) if params[:author] @books = @books.order(:title) if params[:sort] == 'title' respond_with @booksend
Thursday, July 22, 2010
# Rails 2.3
class Book named_scope :written_by {|a| {:conditions => {:author => a}}} named_scope :after {|d| {:conditions => ["published_on > ?", d]}}# Rails 3
class Book class << self def written_by(name) where(:author => name) end def after(date) where(["published_on > ?", date]) end endend
Thursday, July 22, 2010
OSCON 2010
Be&er H'ks
Thursday, July 22, 2010
OSCON 2010
Generators
Thursday, July 22, 2010
config.generators do |g| g.orm :mongomapper g.test_framework :rspec g.integration_tool :rspecend
rails g model my_model
Thursday, July 22, 2010
OSCON 2010
Engines
Thursday, July 22, 2010
#lib/your_plugin/engine.rbrequire "your_plugin"require "rails"
module YourPlugin class Engine < Rails::Engine engine_name :your_plugin endend
Thursday, July 22, 2010
OSCON 2010
Lots more...railsdispatch.com
edgeguides.rubyonrails.org
Thursday, July 22, 2010
OSCON 2010
But we’re already on Rails 2.3!
Thursday, July 22, 2010
OSCON 2010
How do we cope?
Thursday, July 22, 2010
OSCON 2010
Ignore it alland cheat.github.com/rails/
rails_upgrade
Thursday, July 22, 2010
OSCON 2010
Finds Key Blockers:
Routes, Bundler, application.rb
Thursday, July 22, 2010
OSCON 2010
3 Step Process
Thursday, July 22, 2010
OSCON 2010
Analyze Your Apprake rails:upgrade:check
Thursday, July 22, 2010
OSCON 2010
Backup 2.3 Filesrake rails:upgrade:backup
Thursday, July 22, 2010
OSCON 2010
Run Upgradesrake rails:upgrade:routesrake rails:upgrade:gemsrake rails:upgrade:configuration
Thursday, July 22, 2010
OSCON 2010
Takeaways
Thursday, July 22, 2010
Tests help. Unfortunately, they
may not run.
Thursday, July 22, 2010
Don’t be afraid to re-generate.
Thursday, July 22, 2010
Just take it one problem at a time.
Thursday, July 22, 2010
OSCON 2010
(estions?@mbleigh @intridea
github.com/mbleigh/upgrade-to-rails3
Thursday, July 22, 2010