25.1 rack 22 Caching

Turn off strict sanitization

edit config/environments/development.rb

Depot::Application.configure do

  # Settings specified here will take precedence over those in config/application.rb

  # In the development environment your application's code is reloaded on

  # every request. This slows down response time but is perfect for development

  # since you don't have to restart the web server when you make code changes.

  config.cache_classes = false

  # Log error messages when you accidentally call methods on nil.

  config.whiny_nils = true

  # Show full error reports and disable caching

  config.consider_all_requests_local       = true

  config.action_controller.perform_caching = true

  # Don't care if the mailer can't send

  config.action_mailer.raise_delivery_errors = false

  # Don't actually send emails

  config.action_mailer.delivery_method = :test

  #

  # Alternate configuration example, using gmail:

  #   config.action_mailer.delivery_method = :smtp

  #   config.action_mailer.smtp_settings = {

  #     address:        "smtp.gmail.com",

  #     port:           587, 

  #     domain:         "domain.of.sender.net",

  #     authentication: "plain",

  #     user_name:      "dave",

  #     password:       "secret",

  #     enable_starttls_auto: true

  #   } 

  # Print deprecation notices to the Rails logger

  config.active_support.deprecation = :log

  # Only use best-standards-support built into browsers

  config.action_dispatch.best_standards_support = :builtin

  # Raise exception on mass assignment protection for Active Record models

  config.active_record.mass_assignment_sanitizer = :logger

  # Log the query plan for queries taking more than this (works

  # with SQLite, MySQL, and PostgreSQL)

  config.active_record.auto_explain_threshold_in_seconds = 0.5

  # Do not compress assets

  config.assets.compress = false

  # Expands the lines which load the assets

  config.assets.debug = true

end

Restart the server.

bundle exec /home/rubys/git/rails/railties/bin/rails new depot_client --skip-bundle --dev

      create  

      create  README.rdoc

      create  Rakefile

      create  config.ru

      create  .gitignore

      create  Gemfile

      create  app

      create  app/assets/images/rails.png

      create  app/assets/javascripts/application.js

      create  app/assets/stylesheets/application.css

      create  app/controllers/application_controller.rb

      create  app/helpers/application_helper.rb

      create  app/mailers

      create  app/models

      create  app/views/layouts/application.html.erb

      create  app/mailers/.gitkeep

      create  app/models/.gitkeep

      create  config

      create  config/routes.rb

      create  config/application.rb

      create  config/environment.rb

      create  config/environments

      create  config/environments/development.rb

      create  config/environments/production.rb

      create  config/environments/test.rb

      create  config/initializers

      create  config/initializers/backtrace_silencers.rb

      create  config/initializers/inflections.rb

      create  config/initializers/mime_types.rb

      create  config/initializers/secret_token.rb

      create  config/initializers/session_store.rb

      create  config/initializers/wrap_parameters.rb

      create  config/locales

      create  config/locales/en.yml

      create  config/boot.rb

      create  config/database.yml

      create  db

      create  db/seeds.rb

      create  doc

      create  doc/README_FOR_APP

      create  lib

      create  lib/tasks

      create  lib/tasks/.gitkeep

      create  lib/assets

      create  lib/assets/.gitkeep

      create  log

      create  log/.gitkeep

      create  public

      create  public/404.html

      create  public/422.html

      create  public/500.html

      create  public/favicon.ico

      create  public/index.html

      create  public/robots.txt

      create  script

      create  script/rails

      create  test/fixtures

      create  test/fixtures/.gitkeep

      create  test/functional

      create  test/functional/.gitkeep

      create  test/integration

      create  test/integration/.gitkeep

      create  test/unit

      create  test/unit/.gitkeep

      create  test/performance/browsing_test.rb

      create  test/test_helper.rb

      create  tmp/cache

      create  tmp/cache/assets

      create  vendor/assets/javascripts

      create  vendor/assets/javascripts/.gitkeep

      create  vendor/assets/stylesheets

      create  vendor/assets/stylesheets/.gitkeep

      create  vendor/plugins

      create  vendor/plugins/.gitkeep

bundle install

Using rake (0.9.2.2) 

Using i18n (0.6.1) 

Using multi_json (1.3.6) 

Using activesupport (3.2.8) 

Using builder (3.0.3) 

Using activemodel (3.2.8) 

Using erubis (2.7.0) 

Using journey (1.0.4.20120614141756) 

Using rack (1.4.1) 

Using rack-cache (1.2) 

Using rack-test (0.6.2) 

Using hike (1.2.1) 

Using tilt (1.3.3) 

Using sprockets (2.7.0) 

Using actionpack (3.2.8) 

Using mime-types (1.19) 

Using polyglot (0.3.3) 

Using treetop (1.4.11) 

Using mail (2.4.4) 

Using actionmailer (3.2.8) 

Using arel (3.0.2.20120221150532) 

Using tzinfo (0.3.33) 

Using activerecord (3.2.8) 

Using activeresource (3.2.8) 

Using bundler (1.2.0) 

Using coffee-script-source (1.3.3) 

Using execjs (1.4.0) 

Using coffee-script (2.2.0) 

Using rack-ssl (1.3.2) 

Using json (1.7.5) 

Using rdoc (3.12) 

Using thor (0.16.0) 

Using railties (3.2.8) 

Using coffee-rails (3.2.2) 

Using jquery-rails (2.1.3) 

Using rails (3.2.8) 

Using sass (3.2.1) 

Using sass-rails (3.2.5) 

Using sqlite3 (1.3.6) 

Using uglifier (1.3.0) 

Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.

edit app/models/product.rb

class Product < ActiveResource::Base

  self.site = 'http://dave:secret@localhost:3000/'

end

echo "Product.find(2).title" | IRBRC=tmp/irbrc rails console

Loading development environment (Rails 3.2.8)

>> Product.find(2).title

=> "CoffeeScript"

>> 

edit app/controllers/line_items_controller.rb

  def create

    @cart = current_cart

    if params[:line_item]

      # ActiveResource

      params[:line_item][:order_id] = params[:order_id]

      @line_item = LineItem.new(params[:line_item])

    else

      # HTML forms

      product = Product.find(params[:product_id])

      @line_item = @cart.add_product(product.id)

    end

    @line_item.product = product

    respond_to do |format|

      if @line_item.save

        format.html { redirect_to store_url }

        format.js   { @current_item = @line_item }

        format.json { render :json => @line_item,

          :status => :created, :location => @line_item }

      else

        format.html { render :action => "new" }

        format.json { render :json => @line_item.errors,

          :status => :unprocessable_entity }

      end

    end

  end

edit config/routes.rb

Depot::Application.routes.draw do

  get 'admin' => 'admin#index'

  controller :sessions do

    get  'login' => :new

    post 'login' => :create

    delete 'logout' => :destroy

  end

  scope '(:locale)' do

    resources :users

    resources :orders do

      resources :line_items

    end

    resources :line_items

    resources :carts

    resources :products do

      get :who_bought, :on => :member

    end

    root :to => 'store#index', :as => 'store'

  end

end

echo "Product.find(2).title" | IRBRC=tmp/irbrc rails console

Loading development environment (Rails 3.2.8)

>> Product.find(2).title

=> "CoffeeScript"

>> 

echo "p = Product.find(2)\\nputs p.price\\np.price = BigDecimal.new(p.price)-5\\np.save" | IRBRC=tmp/irbrc rails console

Loading development environment (Rails 3.2.8)

>> p = Product.find(2)

=> #<Product:0x7f500e3ede50 @attributes={"price"=>"36.0", "created_at"=>"2012-10-11T07:11:35Z", "image_url"=>"cs.jpg", "title"=>"CoffeeScript", "updated_at"=>"2012-10-11T07:11:35Z", "id"=>2, "description"=>"<p>\n        CoffeeScript is JavaScript done right. It provides all of JavaScript's\n\tfunctionality wrapped in a cleaner, more succinct syntax. In the first\n\tbook on this exciting new language, CoffeeScript guru Trevor Burnham\n\tshows you how to hold onto all the power and flexibility of JavaScript\n\twhile writing clearer, cleaner, and safer code.\n      </p>"}, @persisted=true, @prefix_options={}>

>> puts p.price

36.0

=> nil

>> p.price = BigDecimal.new(p.price)-5

=> #<BigDecimal:7f500e3e1538,'0.31E2',9(27)>

>> p.save

=> true

>> 

expire cache

rm -rf /home/rubys/git/awdwr/edition4/work-187/depot/tmp/cache

fetch storefront

get /

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Your Pragmatic Catalog

CoffeeScript

CoffeeScript is JavaScript done right. It provides all of JavaScript's functionality wrapped in a cleaner, more succinct syntax. In the first book on this exciting new language, CoffeeScript guru Trevor Burnham shows you how to hold onto all the power and flexibility of JavaScript while writing clearer, cleaner, and safer code.

$31.00

Programming Ruby 1.9

Ruby is the fastest growing and most exciting dynamic language out there. If you need to get working programs delivered fast, you should add Ruby to your toolbox.

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Rails Test Prescriptions

Rails Test Prescriptions is a comprehensive guide to testing Rails applications, covering Test-Driven Development from both a theoretical perspective (why to test) and from a practical perspective (how to test effectively). It covers the core Rails testing tools and procedures for Rails 2 and Rails 3, and introduces popular add-ons, including Cucumber, Shoulda, Machinist, Mocha, and Rcov.

$34.95

fetch product (fallback in case storefront is cached)

get /login

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Please Log In

Name:

Password:

post /login?locale=en

• name => dave
• password => secret

You are being redirected.

get http://localhost:3000/admin?locale=en

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• Home
• Questions
• News
• Contact

• Orders
• Products
• Users

Welcome

It's Thu Oct 11 03:21:48 -0400 2012 We have 102 orders.

get /products/2

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Pragmatic Bookshelf

• Home
• Questions
• News
• Contact

• Orders
• Products
• Users

Title: CoffeeScript

Description: <p> CoffeeScript is JavaScript done right. It provides all of JavaScript's functionality wrapped in a cleaner, more succinct syntax. In the first book on this exciting new language, CoffeeScript guru Trevor Burnham shows you how to hold onto all the power and flexibility of JavaScript while writing clearer, cleaner, and safer code. </p>

Image url: cs.jpg

Price: 31.0

Edit | Back

edit app/models/order.rb

class Order < ActiveResource::Base

  self.site = 'http://dave:secret@localhost:3000/'

end

echo "Order.find(1).name\\nOrder.find(1).line_items\\n" | IRBRC=tmp/irbrc rails console

Loading development environment (Rails 3.2.8)

>> Order.find(1).name

=> "Dave Thomas"

>> Order.find(1).line_items

NoMethodError: undefined method `line_items' for #<Order:0x7fd4bbc6b280>

	from /home/rubys/git/rails/activeresource/lib/active_resource/base.rb:1470:in `method_missing'

	from (irb):2

>> 

edit app/models/line_item.rb

class LineItem < ActiveResource::Base

  self.site = 'http://dave:secret@localhost:3000/orders/:order_id'

end

post /logout?locale=en

• submit => Logout

You are being redirected.

get http://localhost:3000/en

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Your Cart

Total

$0.00

• Home
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Logged out

Your Pragmatic Catalog

CoffeeScript

CoffeeScript is JavaScript done right. It provides all of JavaScript's functionality wrapped in a cleaner, more succinct syntax. In the first book on this exciting new language, CoffeeScript guru Trevor Burnham shows you how to hold onto all the power and flexibility of JavaScript while writing clearer, cleaner, and safer code.

$31.00

Programming Ruby 1.9

Ruby is the fastest growing and most exciting dynamic language out there. If you need to get working programs delivered fast, you should add Ruby to your toolbox.

$49.95

Rails Test Prescriptions

Rails Test Prescriptions is a comprehensive guide to testing Rails applications, covering Test-Driven Development from both a theoretical perspective (why to test) and from a practical perspective (how to test effectively). It covers the core Rails testing tools and procedures for Rails 2 and Rails 3, and introduces popular add-ons, including Cucumber, Shoulda, Machinist, Mocha, and Rcov.

$34.95

echo "LineItem.find(:all, :params => {:order_id=>1})" | IRBRC=tmp/irbrc rails console

Loading development environment (Rails 3.2.8)

>> LineItem.find(:all, :params => {:order_id=>1})

=> [#<LineItem:0x7f20a60bab80 @attributes={"price"=>"36.0", "created_at"=>"2012-10-11T07:14:47Z", "quantity"=>1, "product_id"=>2, "updated_at"=>"2012-10-11T07:15:28Z", "id"=>7, "cart_id"=>nil}, @prefix_options={:order_id=>1}, @persisted=true>, #<LineItem:0x7f20a60b6418 @attributes={"price"=>"36.0", "created_at"=>"2012-10-11T07:18:44Z", "quantity"=>2, "product_id"=>2, "updated_at"=>"2012-10-11T07:18:58Z", "id"=>8, "cart_id"=>nil}, @prefix_options={:order_id=>1}, @persisted=true>]

>> 

get /orders/1/line_items.json

[{"price":"36.0","created_at":"2012-10-11T07:14:47Z","quantity":1,"product_id":2,"updated_at":"2012-10-11T07:15:28Z","order_id":1,"id":7,"cart_id":null},{"price":"36.0","created_at":"2012-10-11T07:18:44Z","quantity":2,"product_id":2,"updated_at":"2012-10-11T07:18:58Z","order_id":102,"id":8,"cart_id":null}]

edit app/controllers/line_items_controller.rb

  def index

    @line_items = LineItem.all

    respond_to do |format|

      format.html # index.html.erb

      format.json { render :json => @line_items }

      format.xml { render :xml => @line_items }

    end

  end

get /orders/1/line_items.xml

<?xml version="1.0" encoding="UTF-8"?>

<line-items type="array">

  <line-item>

    <price type="decimal">36.0</price>

    <created-at type="datetime">2012-10-11T07:14:47Z</created-at>

    <quantity type="integer">1</quantity>

    <product-id type="integer">2</product-id>

    <updated-at type="datetime">2012-10-11T07:15:28Z</updated-at>

    <order-id type="integer">1</order-id>

    <id type="integer">7</id>

    <cart-id type="integer" nil="true"/>

  </line-item>

  <line-item>

    <price type="decimal">36.0</price>

    <created-at type="datetime">2012-10-11T07:18:44Z</created-at>

    <quantity type="integer">2</quantity>

    <product-id type="integer">2</product-id>

    <updated-at type="datetime">2012-10-11T07:18:58Z</updated-at>

    <order-id type="integer">102</order-id>

    <id type="integer">8</id>

    <cart-id type="integer" nil="true"/>

  </line-item>

</line-items>

echo "LineItem.format = :xml\\nli = LineItem.find(:all, :params => {:order_id=>1}).first\\nputs li.price\\nli.price *= 0.8\\nli.save" | IRBRC=tmp/irbrc rails console

Loading development environment (Rails 3.2.8)

>> LineItem.format = :xml

=> :xml

>> li = LineItem.find(:all, :params => {:order_id=>1}).first

=> #<LineItem:0x7f9afd285a10 @attributes={"price"=>#<BigDecimal:7f9afd28e7c8,'0.36E2',9(18)>, "created_at"=>Thu Oct 11 07:14:47 UTC 2012, "product_id"=>2, "quantity"=>1, "updated_at"=>Thu Oct 11 07:15:28 UTC 2012, "id"=>7, "cart_id"=>nil}, @persisted=true, @prefix_options={:order_id=>1}>

>> puts li.price

36.0

=> nil

>> li.price *= 0.8

=> 28.8

>> li.save

ActiveResource::ClientError: Failed.  Response code = 406.  Response message = Not Acceptable .

	from /home/rubys/git/rails/activeresource/lib/active_resource/connection.rb:146:in `handle_response'

	from /home/rubys/git/rails/activeresource/lib/active_resource/connection.rb:115:in `request'

	from /home/rubys/git/rails/activeresource/lib/active_resource/connection.rb:92:in `put'

	from /home/rubys/git/rails/activeresource/lib/active_resource/connection.rb:218:in `with_auth'

	from /home/rubys/git/rails/activeresource/lib/active_resource/connection.rb:92:in `put'

	from /home/rubys/git/rails/activeresource/lib/active_resource/base.rb:1353:in `update_without_notifications'

	from /home/rubys/git/rails/activeresource/lib/active_resource/observing.rb:19:in `update'

	from /home/rubys/git/rails/activeresource/lib/active_resource/base.rb:1155:in `save_without_validation'

	from /home/rubys/git/rails/activeresource/lib/active_resource/validations.rb:79:in `save_without_notifications'

	from /home/rubys/git/rails/activeresource/lib/active_resource/observing.rb:19:in `save'

	from (irb):5

>> 

echo "li2 = LineItem.new(:order_id=>1, :product_id=>2, :quantity=>1, :price=>0.0)\\nli2.save" | IRBRC=tmp/irbrc rails console

Loading development environment (Rails 3.2.8)

>> li2 = LineItem.new(:order_id=>1, :product_id=>2, :quantity=>1, :price=>0.0)

=> #<LineItem:0x7f253f95bdf0 @attributes={"price"=>0.0, "quantity"=>1, "product_id"=>2}, @prefix_options={:order_id=>1}, @persisted=false>

>> li2.save

=> true

>> 

25.1 rack 22 Caching