Mysql to PostgreSql Rails 3 heroku app true/false

Question

私はherokuにプッシュするまで、すべてうまく動作します。私はそれがdiffirentの方法と関係していることを集めました。mysqlとpostgresはブール値を表示しますか？

私は

@special_offers = Wine.find(:all, :include => [:inventories], :conditions => ["inventories.special = ? AND inventories.warehouse_id IN (?)", "true", @wharehouses_array], :order => "inventories.updated_at DESC", :limit => 3) 

を実行しようとしているクエリを ルビー1.9.2p318と マックスOSXここ

上のMysql 5.2.35とのRails 3.2.2をされて使用しています

inventories.special = ?, "true" これはmysql上でうまく動作しますが、私がherokuにプッシュするときにはうまく動作しません。ポストグルを使用しています

"true"を1と "1"と "t"とtとtrueで置き換えようとしましたが、何も問題なく動作していますか？

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UPDATE：
Herokuのログファイル

2012-04-04T14:06:58+00:00 app[web.1]: [2012-04-04 14:06:58] INFO WEBrick 1.3.1 
2012-04-04T14:06:58+00:00 app[web.1]: [2012-04-04 14:06:58] INFO WEBrick::HTTPServer#start: pid=1 port=54181 
2012-04-04T14:06:58+00:00 app[web.1]: [2012-04-04 14:06:58] INFO ruby 1.9.2 (2011-07-09) [x86_64-linux] 
2012-04-04T14:06:59+00:00 heroku[web.1]: State changed from starting to up 
2012-04-04T14:07:01+00:00 app[web.1]: => Booting WEBrick 
2012-04-04T14:07:01+00:00 app[web.1]: => Call with -d to detach 
2012-04-04T14:07:01+00:00 app[web.1]: => Ctrl-C to shutdown server 
2012-04-04T14:07:01+00:00 app[web.1]: 
2012-04-04T14:07:01+00:00 app[web.1]: => Rails 3.2.2 application starting in production on http://0.0.0.0:54181 
2012-04-04T14:07:01+00:00 app[web.1]: 
2012-04-04T14:07:01+00:00 app[web.1]: Started GET "/" for 41.119.121.138 at 2012-04-04 14:07:01 +0000 
2012-04-04T14:07:02+00:00 app[web.1]: Processing by HomeController#index as HTML 
2012-04-04T14:07:03+00:00 app[web.1]: Rendered partials/_display_wines.html.erb (169.1ms) 
2012-04-04T14:07:03+00:00 app[web.1]: Rendered partials/_display_wines.html.erb (0.0ms) 
2012-04-04T14:07:03+00:00 app[web.1]: Rendered partials/_display_wines.html.erb (8.1ms) 
2012-04-04T14:07:03+00:00 app[web.1]: Rendered home/index.html.erb within layouts/application (259.9ms) 
2012-04-04T14:07:03+00:00 app[web.1]: Rendered partials/_header_bar.html.erb (6.5ms) 
2012-04-04T14:07:03+00:00 app[web.1]: Rendered partials/_main_links.html.erb (0.3ms) 
2012-04-04T14:07:03+00:00 app[web.1]: Rendered partials/_footer.html.erb (4.9ms) 
2012-04-04T14:07:03+00:00 app[web.1]: Completed 200 OK in 1081ms (Views: 345.8ms | ActiveRecord: 175.7ms | Solr: 0.0ms) 
2012-04-04T14:07:03+00:00 app[web.1]: cache: [GET /] miss 
2012-04-04T14:07:03+00:00 heroku[router]: GET stormy-fog-6888.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=1350ms status=200 bytes=36808 
2012-04-04T14:07:04+00:00 heroku[router]: GET stormy-fog-6888.herokuapp.com/javascripts/jquery.js dyno=web.1 queue=0 wait=0ms service=137ms status=304 bytes=0 
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+00:00 app[web.1]: cache: [GET /javascripts/script1.js] miss 
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2012-04-04T14:07:04+00:00 app[web.1]: cache: [GET /javascripts/PIE.js] miss 
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2012-04-04T14:07:04+00:00 app[web.1]: cache: [GET /images/cybercellar_logo.jpg] miss 
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2012-04-04T14:07:04+00:00 app[web.1]: cache: [GET /images/header_login.png] miss 
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2012-04-04T14:07:05+00:00 app[web.1]: cache: [GET /images/no_wine.png] miss 
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2012-04-04T14:07:05+00:00 app[web.1]: cache: [GET /images/find_wine_wrap.png] miss 
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2012-04-04T14:07:05+00:00 app[web.1]: cache: [GET /images/cart_background.png] miss 
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2012-04-04T14:07:05+00:00 app[web.1]: cache: [GET /images/find_wine.png] miss 
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スキーマファイル：在庫テーブルの

create_table "inventories", :force => true do |t| 
    t.integer "wine_id" 
    t.integer "warehouse_id" 
    t.integer "stock" 
    t.float  "price" 
    t.integer "quantity_id" 
    t.timestamp "created_at" 
    t.timestamp "updated_at" 
    t.boolean "available",      :default => false 
    t.boolean "discount",       :default => false 
    t.string "markupprofile_id", :limit => 45 
    t.string "discountprofile_id", :limit => 45 
    t.float  "discount_price" 
    t.boolean "special",       :default => false 
    end 

Answer 1

文字列ではなく実際のTrueClassを使用すると、Railsはそれを正しいクエリに変換します。

正しい：

"inventories.special = ?", true 

誤：

"inventories.special = ?", "true" 

秒1がまだ有効でクエリを生成するので、それがエラーを投げていない、それだけで特別な実際の文字列であるレコードを探していますその中の真の文字。