Michael Hartl：第7章 - 應用程序崩潰

我剛剛完成了Hartl的RoR教程第7章。所有Spec測試都通過了，應用程序按照預期在本地主機上運行。然而，該應用程序在Heroku上墜毀。日誌沒有任何意義。根據Heroku警告消息的建議，我明確將Ruby版本設置爲1.9.3，但這沒有什麼區別。在HerokuMichael Hartl：第7章 - 應用程序崩潰

運行它

紅寶石-v給我1.9.3，日誌提示1.9.1

不知道這是張貼日誌的正確方法，但下面是Heroku的日誌的轉儲：

> 2013-06-30T16:52:30.721129+00:00 app[web.1]: => Booting WEBrick 
> 2013-06-30T16:52:30.829645+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:in 
> `load_dependency' 2013-06-30T16:52:30.828830+00:00 app[web.1]: Exiting 
> 2013-06-30T16:52:30.829645+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in 
> `require' 2013-06-30T16:52:30.829645+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in 
> `block in require' 2013-06-30T16:52:30.829645+00:00 app[web.1]: 
> /app/app/models/user.rb:1:in `<top (required)>': superclass mismatch 
> for class User (TypeError) 2013-06-30T16:52:30.829645+00:00 
> app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:359:in 
> `require_or_load' 2013-06-30T16:52:30.829840+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:225:in 
> `require_dependency' 2013-06-30T16:52:30.829645+00:00 app[web.1]: 
> from 
> /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in 
> `require' 2013-06-30T16:52:30.830407+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:438:in 
> `each' 2013-06-30T16:52:30.829645+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:313:in 
> `depend_on' 2013-06-30T16:52:30.830407+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:436:in 
> `each' 2013-06-30T16:52:30.830407+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:436:in 
> `eager_load!' 2013-06-30T16:52:30.830407+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:439:in 
> `block (2 levels) in eager_load!' 2013-06-30T16:52:30.830565+00:00 
> app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/application/finisher.rb:53:in 
> `block in <module:Finisher>' 2013-06-30T16:52:30.830407+00:00 
> app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:438:in 
> `block in eager_load!' 2013-06-30T16:52:30.830565+00:00 app[web.1]: 
> from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:55:in 
> `block in run_initializers' 2013-06-30T16:52:30.830565+00:00 
> app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:54:in 
> `run_initializers' 2013-06-30T16:52:30.830565+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:30:in 
> `run' 2013-06-30T16:52:30.830565+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:54:in 
> `each' 2013-06-30T16:52:30.830565+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:30:in 
> `instance_exec' 2013-06-30T16:52:30.830565+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/application.rb:136:in 
> `initialize!' 2013-06-30T16:52:30.830700+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:in 
> `initialize' 2013-06-30T16:52:30.830700+00:00 app[web.1]:  from 
> /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:in 
> `instance_eval' 2013-06-30T16:52:30.830565+00:00 app[web.1]: from 
> /app/config.ru:3:in `require' 2013-06-30T16:52:30.830700+00:00 
> app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:40:in 
> `eval' 2013-06-30T16:52:30.830565+00:00 app[web.1]: from 
> /app/config/environment.rb:5:in `<top (required)>' 
> 2013-06-30T16:52:30.830700+00:00 app[web.1]: from /app/config.ru:3:in 
> `block in <main>' 2013-06-30T16:52:30.830565+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:30:in 
> `method_missing' 2013-06-30T16:52:30.830700+00:00 app[web.1]:  from 
> /app/config.ru:in `new' 2013-06-30T16:52:30.830838+00:00 app[web.1]: 
> from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands.rb:55:in 
> `block in <top (required)>' 2013-06-30T16:52:30.830838+00:00 
> app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands/server.rb:70:in 
> `start' 2013-06-30T16:52:30.830700+00:00 app[web.1]: from 
> /app/config.ru:in `<main>' 2013-06-30T16:52:30.830700+00:00 
> app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:304:in 
> `wrapped_app' 2013-06-30T16:52:30.830700+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:40:in 
> `parse_file' 2013-06-30T16:52:30.830700+00:00 app[web.1]:  from 
> /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:200:in 
> `app' 2013-06-30T16:52:30.830700+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands/server.rb:46:in 
> `app' 2013-06-30T16:52:30.830838+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:254:in 
> `start' 2013-06-30T16:52:30.830838+00:00 app[web.1]: from 
> script/rails:6:in `require' 2013-06-30T16:52:30.830838+00:00 
> app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands.rb:50:in 
> `tap' 2013-06-30T16:52:30.830838+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands.rb:50:in 
> `<top (required)>' 2013-06-30T16:52:30.830838+00:00 app[web.1]: from 
> script/rails:6:in `<main>' 2013-06-30T16:52:32.248386+00:00 
> heroku[web.1]: Process exited with status 1 
> 2013-06-30T16:52:32.258303+00:00 heroku[web.1]: State changed from 
> starting to crashed 2013-06-30T16:54:22+00:00 heroku[slug-compiler]: 
> Slug compilation started 2013-06-30T16:55:15.220931+00:00 heroku[api]: 
> Deploy b5a74ad by [email protected] 
> 2013-06-30T16:55:15.263331+00:00 heroku[api]: Release v12 created by 
> [email protected] 2013-06-30T16:55:15.300675+00:00 heroku[api]: 
> Deploy b5a74ad by [email protected] 
> 2013-06-30T16:55:15.493971+00:00 heroku[web.1]: State changed from 
> crashed to starting 2013-06-30T16:55:15+00:00 heroku[slug-compiler]: 
> Slug compilation finished 2013-06-30T16:55:17.697516+00:00 
> heroku[web.1]: Starting process with command `bundle exec rails server 
> -p 48620` 2013-06-30T16:55:19.476876+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support 
> for these plugins will be removed in Rails 4.0. Move them out and 
> bundle them in your Gemfile, or fold them in to your app as 
> lib/myplugin/* and config/initializers/myplugin.rb. See the release 
> notes for more on this: 
> http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. 
> (called from <top (required)> at /app/config/environment.rb:5) 
> 2013-06-30T16:55:19.476876+00:00 app[web.1]: DEPRECATION WARNING: You 
> have Rails 2.3-style plugins in vendor/plugins! Support for these 
> plugins will be removed in Rails 4.0. Move them out and bundle them in 
> your Gemfile, or fold them in to your app as lib/myplugin/* and 
> config/initializers/myplugin.rb. See the release notes for more on 
> this: 
> http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. 
> (called from <top (required)> at /app/config/environment.rb:5) 
> 2013-06-30T16:55:20.731749+00:00 app[web.1]: => Booting WEBrick 
> 2013-06-30T16:55:20.731749+00:00 app[web.1]: => Call with -d to detach 
> 2013-06-30T16:55:20.731749+00:00 app[web.1]: => Rails 3.2.13 
> application starting in production on http://0.0.0.0:48620 
> 2013-06-30T16:55:20.731749+00:00 app[web.1]: => Ctrl-C to shutdown 
> server 2013-06-30T16:55:20.731749+00:00 app[web.1]: Connecting to 
> database specified by DATABASE_URL 2013-06-30T16:55:20.815078+00:00 
> app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in 
> `require' 2013-06-30T16:55:20.814340+00:00 app[web.1]: Exiting 
> 2013-06-30T16:55:20.815078+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:438:in 
> `each' 2013-06-30T16:55:20.815078+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:313:in 
> `depend_on' 2013-06-30T16:55:20.815078+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in 
> `require' 2013-06-30T16:55:20.815078+00:00 app[web.1]: 
> /app/app/models/user.rb:1:in `<top (required)>': superclass mismatch 
> for class User (TypeError) 2013-06-30T16:55:20.815078+00:00 
> app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in 
> `block in require' 2013-06-30T16:55:20.815078+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:359:in 
> `require_or_load' 2013-06-30T16:55:20.815078+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:225:in 
> `require_dependency' 2013-06-30T16:55:20.815078+00:00 app[web.1]: 
> from 
> /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:in 
> `load_dependency' 2013-06-30T16:55:20.815450+00:00 app[web.1]: from 
> /app/config.ru:3:in `require' 2013-06-30T16:55:20.815283+00:00 
> app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:30:in 
> `run' 2013-06-30T16:55:20.815283+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:55:in 
> `block in run_initializers' 2013-06-30T16:55:20.815283+00:00 
> app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:54:in 
> `each' 2013-06-30T16:55:20.815078+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:439:in 
> `block (2 levels) in eager_load!' 2013-06-30T16:55:20.815283+00:00 
> app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:436:in 
> `each' 2013-06-30T16:55:20.815283+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:436:in 
> `eager_load!' 2013-06-30T16:55:20.815283+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/application/finisher.rb:53:in 
> `block in <module:Finisher>' 2013-06-30T16:55:20.815283+00:00 
> app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:438:in 
> `block in eager_load!' 2013-06-30T16:55:20.815283+00:00 app[web.1]: 
> from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:54:in 
> `run_initializers' 2013-06-30T16:55:20.815450+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:30:in 
> `method_missing' 2013-06-30T16:55:20.815450+00:00 app[web.1]:  from 
> /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:40:in 
> `parse_file' 2013-06-30T16:55:20.815878+00:00 app[web.1]:  from 
> /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:200:in 
> `app' 2013-06-30T16:55:20.815450+00:00 app[web.1]: from 
> /app/config.ru:3:in `block in <main>' 2013-06-30T16:55:20.815283+00:00 
> app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:30:in 
> `instance_exec' 2013-06-30T16:55:20.815450+00:00 app[web.1]: from 
> /app/config/environment.rb:5:in `<top (required)>' 
> 2013-06-30T16:55:20.815450+00:00 app[web.1]: from /app/config.ru:in 
> `<main>' 2013-06-30T16:55:20.815878+00:00 app[web.1]:  from 
> /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:254:in 
> `start' 2013-06-30T16:55:20.815878+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands.rb:55:in 
> `block in <top (required)>' 2013-06-30T16:55:20.815878+00:00 
> app[web.1]: from script/rails:6:in `require' 
> 2013-06-30T16:55:20.815878+00:00 app[web.1]: from script/rails:6:in 
> `<main>' 2013-06-30T16:55:20.815878+00:00 app[web.1]:  from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands/server.rb:70:in 
> `start' 2013-06-30T16:55:20.815283+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/application.rb:136:in 
> `initialize!' 2013-06-30T16:55:20.815450+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:in 
> `instance_eval' 2013-06-30T16:55:20.815878+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands/server.rb:46:in 
> `app' 2013-06-30T16:55:20.815878+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:304:in 
> `wrapped_app' 2013-06-30T16:55:20.815450+00:00 app[web.1]: from 
> /app/config.ru:in `new' 2013-06-30T16:55:20.815878+00:00 app[web.1]: 
> from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands.rb:50:in 
> `tap' 2013-06-30T16:55:20.815878+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands.rb:50:in 
> `<top (required)>' 2013-06-30T16:55:20.815450+00:00 app[web.1]: from 
> /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:in 
> `initialize' 2013-06-30T16:55:20.815450+00:00 app[web.1]:  from 
> /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:40:in 
> `eval' 2013-06-30T16:55:21.891432+00:00 heroku[web.1]: Process exited 
> with status 1 2013-06-30T16:55:21.903767+00:00 heroku[web.1]: State 
> changed from starting to crashed

不用說是一個完整的新手日誌沒有意義，但一切工作正常，直到第7章，所以它一定是在我看齊小學生錯誤某處，但我不知道如何調試錯誤，谷歌搜索不給我任何「堅定」。

任何建議熱烈讚賞。

奧茲

下面提供了一個鏈接到我的回購和用戶類的細節：

https://github.com/OsmanAhmed/sample_app

以下是我的User類。我看看這一點，但什麼也看不到明顯的錯誤：

class User < ActiveRecord::Base 


attr_accessible :name, :email, :password, :password_confirmation 
    has_secure_password 

    before_save { |user| user.email = user.email.downcase } 

    validates :name, presence: true, length: { maximum: 50 } 
    VALID_EMAIL_REGEX = /\A[\w+\-.][email protected][a-z\d\-.]+\.[a-z]+\z/i 
    validates :email, presence: true, format: {with: VALID_EMAIL_REGEX }, 
        uniqueness: { case_sensitive: false } 
    validates :password, presence: true, length: { minimum: 6 } 
    validates :password_confirmation, presence: true 
    after_validation { self.errors.messages.delete(:password_digest) } 

end

來源

2013-06-30 Osman

不要擔心文件路徑中的紅寶石1.9.1 - 這是正常的，在紅寶石1.9.1和1.9.3之間ABI沒有改變 –

我假設你已經委託給Github嗎？你能提供鏈接到repo嗎？日誌表明你的用戶模型存在一些問題。 –

你可以粘貼用戶類嗎？日誌說超類不匹配類用戶（TypeError）' –

的問題是你的應用程序/控制器/ example_user.rb文件，該文件還定義了一個User類。

在開發模式下，這個文件可能永遠不會被加載 - 這不是rails期望找到用戶類的地方。然而，在生產中，rails會預先加載應用程序中的所有文件（至少在eager_load_paths給出的路徑中的所有文件，並恰好先加載這個文件）

來源

2013-07-01 07:13:04

謝謝！我還沒有爲什麼它這次引發了一個問題，但是我剛剛將整個app/controllers/example_user.rb文件註釋掉了，提交併將其推回Heroku。所有工作都按預期工作。我會圍繞這個做更多的閱讀。非常感謝！ – Osman

Michael Hartl：第7章 - 應用程序崩潰

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