Rails 4.0Nikola Šantić

• MVC Web Framework • Verzija 1.0 - prosinac 2005.• “Convention over configuration”, DRY• Najbolji je• 235.000 siteova

Ruby on Rails

• MVC Web Framework • Verzija 1.0 - prosinac 2005.• “Convention over configuration”, DRY• Najbolji je• 235.000 siteova

Ruby on Rails

• MVC Web Framework • Verzija 1.0 - prosinac 2005.• “Convention over configuration”, DRY• Najbolji je• 235.000 siteova

Ruby on Rails

• MVC Web Framework • Verzija 1.0 - prosinac 2005.• “Convention over configuration”, DRY• Najbolji je• 235.000 siteova

Ruby on Rails

• MVC Web Framework • Verzija 1.0 - prosinac 2005.• “Convention over configuration”, DRY• Najbolji je• 235.000 siteova

Ruby on Rails

Promjene

Promjene

verzije commits files changed lines changed

1.2 - 2.0 1,989 1,106 61,774 +38,554 -

2.3 - 3.0 10,000+ 2,334 131,438 +106,109 -

3.0 - 3.1 6,818 1,522 74,115 +62,646 -

3.2 - 4.0? 7,304 2,005 94,231 +92,069 -

Pretpremijera

# Gemfile

# gem 'rails', '3.2.8'gem 'rails', github: 'rails/rails'

$ bundle update

NOVE STVARI

Strong Parameters

# app/models/user.rbclass User < ActiveRecord::Base end

# app/controllers/users_controller.rbclass UsersController < ApplicationController def update # params = {user: {name: 'Nikola', age: 25}} @user = User.find(params[:id]) @user = @user.update_attributes(params[:user]) redirect_to @user endend

Mass assignment

# app/models/user.rbclass User < ActiveRecord::Base end

# app/controllers/users_controller.rbclass UsersController < ApplicationController def update # params = {user: {name: 'Nikola', admin: true}} @user = User.find(params[:id]) @user = @user.update_attributes(params[:user]) redirect_to @user endend

Mass assignment

# app/models/user.rbclass User < ActiveRecord::Base end

# app/controllers/users_controller.rbclass UsersController < ApplicationController def update # params = {user: {name: 'Nikola', admin: true}} @user = User.find(params[:id]) @user = @user.update_attributes(params[:user]) redirect_to @user endend

# @user.admin?# => true

Mass assignment

# app/models/user.rbclass User < ActiveRecord::Base attr_accessible :name end

# app/controllers/users_controller.rbclass UsersController < ApplicationController def update # params = {user: {name: 'Nikola', admin: true}} @user = User.find(params[:id]) @user = @user.update_attributes(params[:user]) redirect_to @user endend

# @user.admin?# => false

Mass assignment

config.active_record.whitelist_attributes = false

# app/models/user.rbclass User < ActiveRecord::Baseend

# app/controllers/users_controller.rbclass UsersController < ApplicationController def update # params = {user: {name: 'Nikola', admin: true}} @user = User.find(params[:id]) @user = @user.update_attributes(user_params) redirect_to @user end

private def user_params params.require(:user).permit(:name) end end

Strong parameters

params.require(:user).permit(:name, :email, :password)

Strong parameters

params.require(:user).permit(:name, :email, :password)

Strong parameters

POST /usersparams = {username: ‘Budala’}

params.require(:user).permit(:name, :email, :password)

Strong parameters

POST /usersparams = {username: ‘Budala’}

<= 400 Bad Request

params.require(:user).permit(:name, :email, :password)

Strong parameters

POST /usersparams = {user: {name: ‘Nikola’, admin: true}}

params.require(:user).permit(:name, :email, :password)

Strong parameters

POST /usersparams = {user: {name: ‘Nikola’, admin: true}}

<= 201 CREATED

User.find_by_name(‘Nikola’).admin?=> false

# app/controllers/users_controller.rbclass UsersController < ApplicationController def user_params params.require(:user).permit(:name) end end

# app/controllers/admin/users_controller.rbclass Admin::UsersController < ApplicationController def user_params params.require(:user).permit(User.attribute_names) end end

Višestruke uloge

https://github.com/rails/strong_parameters

Dostupan već danas!

ActiveSupport::Queue

• delayed_job• Resque• Sidekiq• ...

Background job - Prije

class ExpensiveOperation def run # ... endend

Rails.queue.push(ExpensiveOperation.new)

Background job - Sada

config.queue = :asynchronousconfig.queue = :synchronous

config.queue = :resque

Podešavanje

config.action_mailer.async = true

Asinkroni ActionMailer

ActionController::Live

class MyController < ActionController::Base def index 100.times { response.stream.write "hello world\n" } response.stream.close endend

Streaming

class MyController < ActionController::Base include ActionController::Live def index 100.times { response.stream.write "hello world\n" } response.stream.close endend

Streaming

class MyController < ActionController::Base include ActionController::Live def index 100.times { response.stream.write "hello world\n" } response.stream.close endend

Streaming

WEBrick

class MyController < ActionController::Base include ActionController::Live def index 100.times { response.stream.write "hello world\n" } response.stream.close endend

Streaming

WEBrick

class MyController < ActionController::Base include ActionController::Live def index 100.times { response.stream.write "hello world\n" } response.stream.close endend

Streaming

WEBrick Unicorn

class MyController < ActionController::Base include ActionController::Live def index 100.times { response.stream.write "hello world\n" } response.stream.close endend

Streaming

WEBrick Unicorn

class MyController < ActionController::Base include ActionController::Live def index 100.times { response.stream.write "hello world\n" } response.stream.close endend

Streaming

WEBrick UnicornRainbows

PumaThin

Rails 4.0 > Node.js ?

STARE STVARI

Cache Digest

@user

Babuška caching

@project

@project

@task

@task

@task

<%# app/views/users/show.html.erb %><% cache [ 'v1', @user ] do %> <h1> <%= @user.name %> </h1> <%= render @user.projects %><% end %>

<%# app/views/projects/_project.html.erb %><% cache [ 'v1', project ] do %> <%= project.description %> <%= render project.tasks %><% end %>

<%# app/views/tasks/_task.html.erb %><% cache [ 'v1', task ] do %> Todo: <%= task.content %><% end %>

Babuška caching

<%# app/views/users/show.html.erb %><% cache [ 'v1', @user ] do %> <h1> <%= @user.name %> </h1> <p> Vaši projekti: </p> <%= render @user.projects %><% end %>

<%# app/views/projects/_project.html.erb %><% cache [ 'v1', project ] do %> <%= project.description %> <%= render project.tasks %><% end %>

<%# app/views/tasks/_task.html.erb %><% cache [ 'v1', task ] do %> Todo: <%= task.content %><% end %>

Babuška caching

<%# app/views/users/show.html.erb %><% cache [ 'v2', @user ] do %> <h1> <%= @user.name %> </h1> <p> Vaši projekti: </p> <%= render @user.projects %><% end %>

<%# app/views/projects/_project.html.erb %><% cache [ 'v1', project ] do %> <%= project.description %> <%= render project.tasks %><% end %>

<%# app/views/tasks/_task.html.erb %><% cache [ 'v1', task ] do %> Todo: <%= task.content %><% end %>

Babuška caching

<%# app/views/users/show.html.erb %><% cache [ 'v2', @user ] do %> <h1> <%= @user.name %> </h1> <p> Vaši projekti: </p> <%= render @user.projects %><% end %>

<%# app/views/projects/_project.html.erb %><% cache [ 'v1', project ] do %> <%= project.description %> <%= render project.tasks %><% end %>

<%# app/views/tasks/_task.html.erb %><% cache [ 'v1', task ] do %> Todo: <%= task.content %> Date: <%= task.date %><% end %>

Babuška caching

<%# app/views/users/show.html.erb %><% cache [ 'v3', @user ] do %> <h1> <%= @user.name %> </h1> <p> Vaši projekti: </p> <%= render @user.projects %><% end %>

<%# app/views/projects/_project.html.erb %><% cache [ 'v2', project ] do %> <%= project.description %> <%= render project.tasks %><% end %>

<%# app/views/tasks/_task.html.erb %><% cache [ 'v2', task ] do %> Todo: <%= task.content %> Date: <%= task.date %><% end %>

Babuška caching

<%# app/views/users/show.html.erb %><% cache @user do %> <h1> <%= @user.name %> </h1> <%= render @user.projects %><% end %>

<%# app/views/projects/_project.html.erb %><% cache project do %> <%= project.description %> <%= render project.tasks %><% end %>

<%# app/views/tasks/_task.html.erb %><% cache task do %> Todo: <%= task.content %><% end %>

Sada

Čarolijom! (+ koristi MD5 templatea i partiala

kao cache key)

Kako???

https://github.com/rails/cache_digests

Dostupan već danas!

Routing concerns

BCX::Application.routes.draw do resources :messages { resources :comments } resources :forwards { resources :comments } resources :uploads { resources :comments }end

Prije

BCX::Application.routes.draw do concern :commentable do resources :comments end

resources :messages, :forwards, :uploads, concerns: :commentableend

Sada

https://github.com/rails/routing_concerns

Dostupan već danas!

ActiveRecord::Relation

User.firstUser.last

Prvi koji?

User.firstUser.last

Prvi koji?

Sortirani po id-u

SELECT "users".* FROM "users" ORDER BY id LIMIT 1

Koji svi?

User.allVraća ActiveRecord::Relation objekt

Koji svi?

User.allVraća ActiveRecord::Relation objekt

@users = User.all@users = @users.where(name: params[:name]) if params[:name]@users = @users.order(params[:sort_by]) if params[:sort_by]

Nikoji, eto koji

User.noneNull objekt koji se dalje može ulančavati

I još

User.(metoda)!

I još

User.(metoda)!

@users = User.all@users = @users.where(name: params[:name]) if params[:name]@users = @users.order(params[:sort_by]) if params[:sort_by]

Prije:

I još

User.(metoda)!

@users = User.all@users = @users.where(name: params[:name]) if params[:name]@users = @users.order(params[:sort_by]) if params[:sort_by]

Prije:

@users = User.all@users.where!(name: params[:name]) if params[:name]@users.order!(params[:sort_by]) if params[:sort_by]

Sada:

ZBOGOM STVARI

Zbogom Ruby 1.8

Zbogomfind(:all, :conditions => ...)

ZbogomActiveRecord:SessionStore

ZbogomActiveResource

ZbogomRails::Plugin

ZbogomRails::Plugin

• u /lib folder • pretvori u gem

• Turbolinks• Cached schema dump• HTTP PATCH• HTML5 helperi• config.threadsafe!

Još STO stvari

• Rails 3.1 - gotov• Rails 3.2 - neka deprecation upozorenja, podrška do 4.1• Rails 4.0 - deprecation upozorenja• Rails 4.1 - uklanjanje deprecated dijelova

Verzioniranje

Kad izlazi?

http://edgeguides.rubyonrails.org/4_0_release_notes.html

Dodatna literatura

Rails 4.0 Mind mapBoston.rb - What to expect in Rails 4.0EdgeRails.info Bloghttps://github.com/rails/rails

Dodatna dodatna literatura

Pitanja?

Hvala na pažnji!