爲什麼鐵軌找不到我的清掃工？

我有我的控制器上：爲什麼鐵軌找不到我的清掃工？

class FormulariosController < ApplicationController 
    cache_sweeper :campanha_sweeper, :only => [:show] 

    # actions 
end

我試圖創建一個名爲內部應用程序/清掃目錄，也沒有工作，我已經試過內部模型來創建一個/緩存文件夾（有一個以此爲例的博客）並沒有奏效。

我的清掃是這樣的：

class CampanhaSweeper < ActionController::Caching::Sweeper 
    observe Campanha 

    def after_update(campanha) 
    expire_cache_for(campanha) 
    end 

    private 
    def expire_cache_for(campanha) 
    expire_page(:controller => 'formularios', :action => 'show') 

    ap "Expired cache for formularios#show in formulariosweeper" 
    end

末

我在嘗試啓動服務器以下時：

/Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.0.12/lib/action_controller/caching/sweeping.rb:41:in `const_get': uninitialized constant CampanhaSweeper (NameError) 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.0.12/lib/action_controller/caching/sweeping.rb:41:in `block in cache_sweeper' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.0.12/lib/action_controller/caching/sweeping.rb:39:in `each' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.0.12/lib/action_controller/caching/sweeping.rb:39:in `cache_sweeper' 
    from /Users/thiagomassa/Projects-ginga/ginga-campanhas/app/controllers/formularios_controller.rb:2:in `<class:FormulariosController>' 
    from /Users/thiagomassa/Projects-ginga/ginga-campanhas/app/controllers/formularios_controller.rb:1:in `<top (required)>' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/engine.rb:138:in `block (2 levels) in eager_load!' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/engine.rb:137:in `each' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/engine.rb:137:in `block in eager_load!' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/engine.rb:135:in `each' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/engine.rb:135:in `eager_load!' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/application.rb:108:in `eager_load!' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/application/finisher.rb:41:in `block in <module:Finisher>' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/initializable.rb:25:in `instance_exec' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/initializable.rb:25:in `run' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/initializable.rb:50:in `block in run_initializers' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/initializable.rb:49:in `each' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/initializable.rb:49:in `run_initializers' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/application.rb:134:in `initialize!' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/application.rb:77:in `method_missing' 
    from /Users/thiagomassa/Projects-ginga/ginga-campanhas/config/environment.rb:5:in `<top (required)>' 
    from /Users/thiagomassa/Projects-ginga/ginga-campanhas/config.ru:3:in `block in <main>' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.2.5/lib/rack/builder.rb:46:in `instance_eval' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.2.5/lib/rack/builder.rb:46:in `initialize' 
    from /Users/thiagomassa/Projects-ginga/ginga-campanhas/config.ru:1:in `new' 
    from /Users/thiagomassa/Projects-ginga/ginga-campanhas/config.ru:1:in `<main>' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.2.5/lib/rack/builder.rb:35:in `eval' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.2.5/lib/rack/builder.rb:35:in `parse_file' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.2.5/lib/rack/server.rb:162:in `app' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.2.5/lib/rack/server.rb:253:in `wrapped_app' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.2.5/lib/rack/server.rb:204:in `start' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/commands/server.rb:65:in `start' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/commands.rb:30:in `block in <top (required)>' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/commands.rb:27:in `tap' 
    from /Users/thiagomassa/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.12/lib/rails/commands.rb:27:in `<top (required)>' 
    from script/rails:6:in `require' 
    from script/rails:6:in `<main>'

爲什麼不工作？此外，是否有任何方法只會將視圖的緩存（如何呈現）放到緩存中。我在即時生成的意見，這將是非常有用的，如果我可以過期視圖的緩存位於說，views/formularios/a.html.rb

如果傢伙想知道我的'在做，這很簡單。我使用表單生成視圖，當我想更新視圖（或它的代碼），並且我正在生產時，視圖不會因緩存而更新，因此每次「更新」表單時都必須手動重置它的緩存。

謝謝。

來源

2012-04-25 thiagofm

您是否已將sweepers目錄（或您將清除代碼放在哪裏）添加到autoload_paths的application.rb？

來源

2012-04-25 21:54:20 x1a4

我該怎麼做？ – bcackerman 2012-11-17 21:45:47

如果'application.rb'，你應該找到一條添加到'config.autoload_paths'的行。它最終應該看起來像'config.autoload_paths + =％W（＃{Rails.root}/path/to/sweepers）'。可能還有其他自動加載路徑。 – x1a4 2012-11-18 02:27:46

好的，我這樣做了，並添加了'config.active_record.observers = [：order_sweeper]'。我在我的模型中有'cache_sweeper：order_sweeper'，當我啓動我的服務器時仍然會出現一個錯誤'未初始化的常量OrderSweeper（NameError）'。任何想法有什麼不對？ – bcackerman 2012-11-18 18:54:43

爲什麼鐵軌找不到我的清掃工？

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