■API Key他の初期設定

Ruby

# ---- cpro01\config\environment.rb ----

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

# Specifies gem version of Rails to use when vendor/rails is not present
RAILS_GEM_VERSION = '2.3.3' unless defined? RAILS_GEM_VERSION

# Bootstrap the Rails environment, frameworks, and default configuration
require File.join(File.dirname(__FILE__), 'boot')

Rails::Initializer.run do |config|
  # Settings in config/environments/* take precedence over those specified here.
  # Application configuration should go into files in config/initializers
  # -- all .rb files in that directory are automatically loaded.

  # Add additional load paths for your own custom dirs
  # config.load_paths += %W( #{RAILS_ROOT}/extras )

  # Specify gems that this application depends on and have them installed with rake gems:install
  # config.gem "bj"
  # config.gem "hpricot", :version => '0.6', :source => "http://code.whytheluckystiff.net"
  # config.gem "sqlite3-ruby", :lib => "sqlite3"
  # config.gem "aws-s3", :lib => "aws/s3"

  # Only load the plugins named here, in the order given (default is alphabetical).
  # :all can be used as a placeholder for all plugins not explicitly named
  # config.plugins = [ :exception_notification, :ssl_requirement, :all ]

  # Skip frameworks you're not going to use. To use Rails without a database,
  # you must remove the Active Record framework.
  # config.frameworks -= [ :active_record, :active_resource, :action_mailer ]

  # Activate observers that should always be running
  # config.active_record.observers = :cacher, :garbage_collector, :forum_observer

  # Set Time.zone default to the specified zone and make Active Record auto-convert to this zone.
  # Run "rake -D time" for a list of tasks for finding time zone names.
  config.time_zone = 'UTC'

  # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
  # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}')]
  # config.i18n.default_locale = :de

  # amazon-ecs
  require 'amazon/ecs'
  Amazon::Ecs.debug = true
  Amazon::Ecs.options = {
    :aWS_access_key_id => "foo",
    :associate_tag => "bar-22",
    :country => :jp,
    :aWS_secret_key => "baz"
  }
end

▲44～52行目を追加

■Modelの生成

ファイルのみ作成（generaterで生成するとActiveRecordを継承するため、利用しない）

Ruby

# ---- cpro01\app\models\item.rb ----

class Item
  attr_accessor :asin, :title, :url, :image, :author
  def initialize(asin, title = nil, url = nil, image = nil, author = nil)
    @asin = asin
    @title = title
    @url = url
    @image = image
    @author = author
  end
end

■BooksControllerの編集

searchメソッドを作成し、Amazon APIからデータを取得する。

Ruby

# ---- cpro01\app\controllers\books_controller.rb ----

class BooksController < ApplicationController
  # GET /books
  # GET /books.xml
  def index
    @books = Book.all

    respond_to do |format|
      format.html # index.html.erb
      format.xml  { render :xml => @books }
    end
  end

  # GET /books/1
  # GET /books/1.xml
  def show
    @book = Book.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.xml  { render :xml => @book }
    end
  end

  # GET /books/new
  # GET /books/new.xml
  def new
    @book = Book.new

    respond_to do |format|
      format.html # new.html.erb
      format.xml  { render :xml => @book }
    end
  end

  # GET /books/1/edit
  def edit
    @book = Book.find(params[:id])
  end

  # POST /books
  # POST /books.xml
  def create
    @book = Book.new(params[:book])

    respond_to do |format|
      if @book.save
        flash[:notice] = 'Book was successfully created.'
        format.html { redirect_to(@book) }
        format.xml  { render :xml => @book, :status => :created, :location => @book }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @book.errors, :status => :unprocessable_entity }
      end
    end
  end

  # PUT /books/1
  # PUT /books/1.xml
  def update
    @book = Book.find(params[:id])

    respond_to do |format|
      if @book.update_attributes(params[:book])
        flash[:notice] = 'Book was successfully updated.'
        format.html { redirect_to(@book) }
        format.xml  { head :ok }
      else
        format.html { render :action => "edit" }
        format.xml  { render :xml => @book.errors, :status => :unprocessable_entity }
      end
    end
  end

  # DELETE /books/1
  # DELETE /books/1.xml
  def destroy
    @book = Book.find(params[:id])
    @book.destroy

    respond_to do |format|
      format.html { redirect_to(books_url) }
      format.xml  { head :ok }
    end
  end

  def search
    #キーワード取得
    @keyword = params[:keyword]

    #検索用初期値
    @search_index = "Books"
    @sort = "daterank"

    #検索
    res = Amazon::Ecs.item_search(@keyword, {
      :search_index => @search_index,
      :response_group => 'Medium',
      :sort => @sort
    })
    @items = []
    res.items.each do |item|
      @items << Item.new(
        item.get('asin'),
        item.get('itemattributes/title'),
        item.get('detailpageurl'),
        item.get_hash('smallimage'),
        item.get('author')
      )
    end
  end
end

▲88～112行目を追加

■Viewファイルの作成

search.html.erbを手動で新規作成。

Ruby

<%# ---- cpro01\app\views\books\search.html.erb ---- %>

<p>検索結果</p>
<% if @items && @items.size > 0 %>
<table>
  <% @items.each do |item| %>
  <tr>
    <td><%= item.title %><br />
        <% if item.image != nil %>
          <%= link_to(image_tag(item.image[:url], :size => "#{item.image[:width]}x#{item.image[:height]}", :alt => item.title), item.url, :target => '_blank') %>
        <% end %><br />
        <%= item.asin %><br />
        <%= item.author %>
    </td>
  </tr>
  <% end %>
<% end %>
</table>

■検索用キーワード入力欄を追加

topのindex.html.erbに追加

Ruby

<% # ---- cpro01\app\views\top\index.html.erb ---- %>

<h1>Top#index</h1>
<p>Find me in app/views/top/index.html.erb</p>
<%= @gmap.div(:width => 550, :height => 400) %>

<p>Amazonから登録図書を検索</p>
<% form_tag :controller => 'books', :action => 'search' do %>
  タイトル：<%= text_field_tag "keyword", @keyword %><br />
  <%= submit_tag "アマゾンで検索" %><br />
<% end %>

▲7～11行目を追加