イケテルRails勉強会 第1部Rails編

rails

20090418 イケテルRails勉強会 第1部Rails編
をやってみた。

準備

↓一通り読んで、API利用登録。
[http://tabelog.com/help/api/:title=食べログAPI サービス案内[食べログ]]

やってみた感想

ActiveResource凄い。
apiの処理が簡単に扱える。
（Hash.from_xmlでxmlをhashにして扱う。）

注意事項

資料上、APIのリクエストパラメータが小文字で記載されてますが
実際は、先頭大文字なので注意。
詳細は下記。
[http://tabelog.com/help/api_manual#rst-api:title=食べログAPI マニュアル[食べログ]]

一応ソース

prefectureモデルはscaffoldで作成するので略。

#models/restaurant.rb
class Restaurant < ActiveResource::Base
  self.site = "http://api.tabelog.com/"
  
  def self.find_restaurants(restaurant_params={})
    restaurant_params[:Key] = "取得したAPIアクセスキー"
    Hash.from_xml(
      self.find(
      :one,
      :from => "/Ver2.1/RestaurantSearch/",
      :params => restaurant_params
      ).to_xml
    )
  end
end

#models/bookmark.rb
class Bookmark < ActiveRecord::Base
  has_attached_file :photo
end

#controllers/restaurants_controller
class RestaurantsController < ApplicationController
  def index
    @prefectures = Prefecture.find(:all)
    @pages = Array.new(100){ |i| i+1 }
    
    @restaurants = Restaurant.find_restaurants(request.query_parameters)["restaurant"]
    @restaurants["Item"].each do |item|
      bookmark = Bookmark.find_by_rcd item["Rcd"]
      if bookmark
        item["Memo"] = bookmark.memo
        item["image_url"] = bookmark.photo_file_name ? request.protocol + request.host_with_port + bookmark.photo.url : nil
      end
    end
    
    #xmlの仕様にあわせるため、ItemをItemsに変更
    @restaurants["Items"] = @restaurants["Item"]
    @restaurants.delete "Item"

    respond_to do |format|
      format.html # index.html.erb
      format.xml  { render :xml => @restaurants.to_xml(:root => "restaurant", :dasherize => false ) }
    end
  end
  
  def create
    if params[:create] && params[:Rcd]
      bookmark_params = {
        :rcd  => params[:Rcd],
        :memo => params[:Memo],
        :photo => params[:photo]
      }
      bookmark = Bookmark.find_or_initialize_by_rcd bookmark_params
      bookmark.attributes = bookmark_params
      bookmark.save
    end
    restaurants_params = {
      :Prefecture  => params[:Prefecture],
      :PageNum => params[:PageNum].to_i
    }
    redirect_to :controller => :restaurants, :action => :index, :params => restaurants_params
  end
end

#views/restaurants/index.html.erb
<h1>RBC食べログ</h1>
<% form_tag({}, {:multipart => true}) do -%>
<p>
  都道府県：<%= select_tag :Prefecture, 
           options_from_collection_for_select(@prefectures, :en, :ja, params[:Prefecture]) %>
</p>
<p>
  ページ：<%= select_tag :PageNum, options_for_select(@pages, params[:PageNum].to_i) %>
</p>
<%= submit_tag "検索", {:name => "search"} %>
<ul>
  <% @restaurants["Items"].each do |item| -%>
  <li>
    <%= radio_button_tag :Rcd, item["Rcd"] %>
    <%= link_to item["RestaurantName"], item["TabelogUrl"], {:target => '_blank'} %>
    <%= item["Memo"] %>
    <% unless item["image_url"].blank? -%>
      <br /><%= image_tag item["image_url"] %>
    <% end -%>
  </li>
  <% end -%>
</ul>
<p>
  メモ：<%= text_field_tag :Memo %>
</p>
<p>
  イメージ：<%= file_field_tag :photo %>
</p>
<%= submit_tag "登録", { :name => "create" } %>
<% end -%>


資料では、初期マスタデータである都道府県情報の登録を
migrationファイル内に記載しているが、seedの方が適切と判断し
seeds.rbに記載した。

#db/seeds.rb
Prefecture.delete_all
prefs = [
["全国","japan"],
["北海道","hokkaido"],
["青森","aomori"],
["岩手","iwate"],
["宮城","miyagi"],
["秋田","akita"],
["山形","yamagata"],
["福島","fukushima"],
["東京","tokyo"],
["神奈川","kanagawa"],
["埼玉","saitama"],
["千葉","chiba"],
["茨城","ibaraki"],
["栃木","tochigi"],
["群馬","gunma"],
["山梨","yamanashi"],
["長野","nagano"],
["新潟","niigata"],
["富山","toyama"],
["石川","ishikawa"],
["福井","fukui"],
["愛知","aichi"],
["岐阜","gifu"],
["静岡","shizuoka"],
["三重","mie"],
["大阪","osaka"],
["兵庫","hyogo"],
["京都","kyoto"],
["滋賀","shiga"],
["奈良","nara"],
["和歌山","wakayama"],
["鳥取","tottori"],
["島根","shimane"],
["岡山","okayama"],
["広島","hiroshima"],
["山口","yamaguchi"],
["徳島","tokushima"],
["香川","kagawa"],
["愛媛","ehime"],
["高知","kochi"],
["福岡","fukuoka"],
["佐賀","saga"],
["長崎","nagasaki"],
["熊本","kumamoto"],
["大分","oita"],
["宮崎","miyazaki"],
["鹿児島","kagoshima"],
["沖縄","okinawa"]
]
prefs.each do |pref|
  Prefecture.create!(:ja => pref[0], :en => pref[1])
end

あとで

paperclipは調べよう。