24.3 Active Resources

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 = false

  # 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

      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 --local

Resolving dependencies...

Using rake 10.4.2

Using i18n 0.7.0

Using multi_json 1.11.0

Using activesupport 3.2.21 from source at /home/rubys/git/rails

Using builder 3.0.4

Using activemodel 3.2.21 from source at /home/rubys/git/rails

Using erubis 2.7.0

Using journey 1.0.4.20120614141756 from source at /home/rubys/git/journey

Using rack 1.4.5

Using rack-cache 1.2

Using rack-test 0.6.3

Using hike 1.2.3

Using tilt 1.4.1

Using sprockets 2.2.3

Using actionpack 3.2.21 from source at /home/rubys/git/rails

Using mime-types 1.25.1

Using polyglot 0.3.5

Using treetop 1.4.15

Using mail 2.5.4

Using actionmailer 3.2.21 from source at /home/rubys/git/rails

Using arel 3.0.3.20131114190737 from source at /home/rubys/git/arel

Using tzinfo 0.3.44

Using activerecord 3.2.21 from source at /home/rubys/git/rails

Using activeresource 3.2.21 from source at /home/rubys/git/rails

Using bundler 1.9.9

Using coffee-script-source 1.9.1.1

Using execjs 2.5.2

Using coffee-script 2.4.1

Using rack-ssl 1.3.4

Using json 1.8.2

Using rdoc 3.12.2

Using thor 0.19.1

Using railties 3.2.21 from source at /home/rubys/git/rails

Using coffee-rails 3.2.2 from source at /home/rubys/git/coffee-rails

Using jquery-rails 3.1.2

Using rails 3.2.21 from source at /home/rubys/git/rails

Using sass 3.4.14

Using sass-rails 3.2.6 from source at /home/rubys/git/sass-rails

Using sqlite3 1.3.10

Using uglifier 2.7.1

Bundle complete! 8 Gemfile dependencies, 40 gems now installed.

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 3.2.21)

Switch to inspect mode.

>> Product.find(2).title

=> "CoffeeScript"

>>

edit app/controllers/line_items_controller.rb

  def create

      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

  resources :users

  resources :products do

    get :who_bought, on: :member

end

  scope '(:locale)' do

    resources :orders do

      resources :line_items

end

    resources :line_items

    resources :carts

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

end

end

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

Loading development environment (Rails 3.2.21)

Switch to inspect mode.

>> 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 3.2.21)

Switch to inspect mode.

>> p = Product.find(2)

=> #<Product:0x00000004569fb0 @attributes={"created_at"=>"2015-05-26T04:40:32Z", "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>", "id"=>2, "image_url"=>"cs.jpg", "price"=>"36.0", "title"=>"CoffeeScript", "updated_at"=>"2015-05-26T04:40:32Z"}, @prefix_options={}, @persisted=true>

>> puts p.price

36.0

=> nil

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

=> #<BigDecimal:455d008,'0.31E2',9(18)>

>> p.save

=> true

>>

expire cache

rm -rf /home/rubys/git/awdwr/edition4/work-32/depot/tmp/cache

fetch storefront

get /

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

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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

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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

post /login?locale=en

name => dave
password => secret

You are being redirected.

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

Welcome

It's 2015-05-26 00:42:57 -0400 We have 2 orders.

get /products/2

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 3.2.21)

Switch to inspect mode.

>> Order.find(1).name

=> "Dave Thomas"

>> Order.find(1).line_items

NoMethodError: undefined method `line_items' for #<Order:0x00000003d93890>

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

	from (irb):2

	from /home/rubys/git/rails/railties/lib/rails/commands/console.rb:47:in `start'

	from /home/rubys/git/rails/railties/lib/rails/commands/console.rb:8:in `start'

	from /home/rubys/git/rails/railties/lib/rails/commands.rb:41:in `<top (required)>'

	from script/rails:6:in `require'

	from script/rails:6:in `<main>'

>>

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

Logged out

Your Pragmatic Catalog

CoffeeScript

$31.00

Programming Ruby 1.9 & 2.0

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

$34.95

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

Loading development environment (Rails 3.2.21)

Switch to inspect mode.

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

=> [#<LineItem:0x000000037e5998 @attributes={"cart_id"=>nil, "created_at"=>"2015-05-26T04:41:25Z", "id"=>10, "price"=>"36.0", "product_id"=>2, "quantity"=>1, "updated_at"=>"2015-05-26T04:41:36Z"}, @prefix_options={:order_id=>1}, @persisted=true>, #<LineItem:0x000000037e4430 @attributes={"cart_id"=>nil, "created_at"=>"2015-05-26T04:42:27Z", "id"=>11, "price"=>"36.0", "product_id"=>2, "quantity"=>2, "updated_at"=>"2015-05-26T04:42:28Z"}, @prefix_options={:order_id=>1}, @persisted=true>]

>>

get /orders/1/line_items.json

[{"cart_id":null,"created_at":"2015-05-26T04:41:25Z","id":10,"order_id":1,"price":"36.0","product_id":2,"quantity":1,"updated_at":"2015-05-26T04:41:36Z"},{"cart_id":null,"created_at":"2015-05-26T04:42:27Z","id":11,"order_id":2,"price":"36.0","product_id":2,"quantity":2,"updated_at":"2015-05-26T04:42:28Z"}]

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>

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

    <created-at type="datetime">2015-05-26T04:41:25Z</created-at>

    <id type="integer">10</id>

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

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

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

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

    <updated-at type="datetime">2015-05-26T04:41:36Z</updated-at>

  </line-item>

  <line-item>

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

    <created-at type="datetime">2015-05-26T04:42:27Z</created-at>

    <id type="integer">11</id>

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

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

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

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

    <updated-at type="datetime">2015-05-26T04:42:28Z</updated-at>

  </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 3.2.21)

Switch to inspect mode.

>> LineItem.format = :xml

=> :xml

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

=> #<LineItem:0x00000003006718 @attributes={"cart_id"=>nil, "created_at"=>2015-05-26 04:41:25 UTC, "id"=>10, "price"=>#<BigDecimal:3005480,'0.36E2',9(18)>, "product_id"=>2, "quantity"=>1, "updated_at"=>2015-05-26 04:41:36 UTC}, @prefix_options={:order_id=>1}, @persisted=true>

>> puts li.price

36.0

=> nil

>> li.price *= 0.8

=> #<BigDecimal:2fdea88,'0.288E2',18(27)>

>> 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 `block 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'

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

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

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

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

	from (irb):5

	from /home/rubys/git/rails/railties/lib/rails/commands/console.rb:47:in `start'

	from /home/rubys/git/rails/railties/lib/rails/commands/console.rb:8:in `start'

	from /home/rubys/git/rails/railties/lib/rails/commands.rb:41:in `<top (required)>'

	from script/rails:6:in `require'

	from script/rails:6:in `<main>'

>>

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 3.2.21)

Switch to inspect mode.

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

=> #<LineItem:0x00000003de33e0 @attributes={"product_id"=>2, "quantity"=>1, "price"=>0.0}, @prefix_options={:order_id=>1}, @persisted=false>

>> li2.save

=> true

>>

25.1 rack 21.2 Form Helpers

Agile Web Development with Rails, Edition 4

24.3 Active Resources

Restart the server.

Your Cart

Your Pragmatic Catalog

CoffeeScript

Programming Ruby 1.9 & 2.0

Rails Test Prescriptions

Welcome

Your Cart

Your Pragmatic Catalog

CoffeeScript

Programming Ruby 1.9 & 2.0

Rails Test Prescriptions