The Depot Application

8.1 Sessions 7.4 Iteration B4: Linking to the Cart

rake db:sessions:create

(in /home/rubys/git/awdwr/work-235/depot)

      exists  db/migrate

      create  db/migrate/20100301141100_create_sessions.rb

rake db:migrate

mv 20100301141100_create_sessions.rb 20100301000004_create_sessions.rb

(in /home/rubys/git/awdwr/work-235/depot)

==  CreateSessions: migrating =================================================

-- create_table(:sessions)

   -> 0.0117s

-- add_index(:sessions, :session_id)

   -> 0.0006s

-- add_index(:sessions, :updated_at)

   -> 0.0005s

==  CreateSessions: migrated (0.0130s) ========================================

sqlite3 db/development.sqlite3 .schema

CREATE TABLE "products" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, "title" varchar(255), "description" text, "image_url" varchar(255), "created_at" datetime, "updated_at" datetime, "price" decimal(8,2) DEFAULT 0);

CREATE TABLE "schema_migrations" ("version" varchar(255) NOT NULL);

CREATE TABLE "sessions" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, "session_id" varchar(255) NOT NULL, "data" text, "created_at" datetime, "updated_at" datetime);

CREATE INDEX "index_sessions_on_session_id" ON "sessions" ("session_id");

CREATE INDEX "index_sessions_on_updated_at" ON "sessions" ("updated_at");

CREATE UNIQUE INDEX "unique_schema_migrations" ON "schema_migrations" ("version");

edit config/initializers/session_store.rb

# Be sure to restart your server when you modify this file.

# Your secret key for verifying cookie session data integrity.

# If you change this key, all old sessions will become invalid!

# Make sure the secret is at least 30 characters and all random, 

# no regular words or you'll be exposed to dictionary attacks.

ActionController::Base.session = {

  :key         => '_depot_session',

  :secret      => '1ce688697ed98072486f4f45a66315795e35a2d81e4fb0b25acd9049d4b83e2fa2caa8980ca25df5032b6ee305263afc9c599c36db4a5a188bc2e920654fb861'

}

# Use the database for sessions instead of the cookie-based default,

# which shouldn't be used to store highly confidential information

# (create the session table with "rake db:sessions:create")

ActionController::Base.session_store = :active_record_store

Restart the server.

edit app/controllers/application_controller.rb

# Filters added to this controller apply to all controllers in the application.

# Likewise, all the methods added will be available for all controllers.

class ApplicationController < ActionController::Base

  helper :all # include all helpers, all the time

  protect_from_forgery # See ActionController::RequestForgeryProtection for details

  # Scrub sensitive parameters from your log

  # filter_parameter_logging :password

end

edit app/controllers/store_controller.rb

private

  def find_cart

    session[:cart] ||= Cart.new

  end

8.1 Sessions 7.4 Iteration B4: Linking to the Cart