omniauth facebook未初始化常量錯誤

我正在跟蹤導演視頻here，但是當我嘗試運行我的服務器時，出現「未初始化的常量OmniAuth（NameError）」錯誤。當我刪除這個文件時，服務器啓動並顯示主頁，除了facebook登錄認證鏈接返回一個路由錯誤「當然沒有路由匹配[GET]」/ auth/facebook「omniauth facebook未初始化常量錯誤

我的問題與這stackoverlfow問題here但我的是發展模式。

所有的代碼都是我wodnering這是什麼。請幫助一樣！

完整的錯誤是

C:/Sites/blog/config/initializers/omniauth.rb:1:in `<top (required)>': uninitialized constant OmniAuth (NameError) 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/engine.rb:652:in `block in load_config_initializer' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/activesupport-4.2.6/lib/active_support/notifications.rb:166:in `instrument' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/engine.rb:651:in `load_config_initializer' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/engine.rb:616:in `block (2 levels) in <class:Engine>' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/engine.rb:615:in `each' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/engine.rb:615:in `block in <class:Engine>' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/initializable.rb:30:in `instance_exec' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/initializable.rb:30:in `run' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/initializable.rb:55:in `block in run_initializers' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/tsort.rb:226:in `block in tsort_each' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/tsort.rb:420:in `block (2 levels) in each_strongly_connected_component_from' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/tsort.rb:429:in `each_strongly_connected_component_from' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/tsort.rb:419:in `block in each_strongly_connected_component_from' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/initializable.rb:44:in `each' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/initializable.rb:44:in `tsort_each_child' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/tsort.rb:413:in `call' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/tsort.rb:413:in `each_strongly_connected_component_from' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/tsort.rb:347:in `block in each_strongly_connected_component' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/tsort.rb:345:in `each' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/tsort.rb:345:in `call' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/tsort.rb:345:in `each_strongly_connected_component' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/tsort.rb:224:in `tsort_each' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/tsort.rb:203:in `tsort_each' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/initializable.rb:54:in `run_initializers' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/application.rb:352:in `initialize!' 
    from C:/Sites/blog/config/environment.rb:5:in `<top (required)>' 
    from C:/Sites/blog/config.ru:3:in `require' 
    from C:/Sites/blog/config.ru:3:in `block in <main>' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/builder.rb:55:in `instance_eval' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/builder.rb:55:in `initialize' 
    from C:/Sites/blog/config.ru:in `new' 
    from C:/Sites/blog/config.ru:in `<main>' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/builder.rb:49:in `eval' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/builder.rb:49:in `new_from_string' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/builder.rb:40:in `parse_file' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/server.rb:299:in `build_app_and_options_from_config' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/server.rb:208:in `app' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/commands/server.rb:61:in `app' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/server.rb:336:in `wrapped_app' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/commands/server.rb:139:in `log_to_stdout' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/commands/server.rb:78:in `start' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:80:in `block in server' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:75:in `tap' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:75:in `server' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:39:in `run_command!' 
    from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.6/lib/rails/commands.rb:17:in `<top (required)>' 
    from bin/rails:4:in `require' 
    from bin/rails:4:in `<main>'

此外，如果/初始化/ omniaut h.rb在其文件夾中我無法生成用戶模型我需要將其刪除以便執行此操作？

我安裝了omniauth-facebook gem的最新版本，並運行了bundle install。

來源

2016-08-12 Lee Eather

'提供商：臉譜，ENV [ 'FACEBOOK_APP_ID']，ENV [ 'FACEBOOK_SECRET']'這條線應該是在你的'初始化/ devise.rb'文件，如果你正在使用的任何機會設計。也嘗試添加更多細節 – Abhinay

不只是使用軌道轉換示例和以下關於github上的文檔omniauth和omniauth-facebook –

你的gemfile中有omniauth和omniauth-facebook嗎？像：

gem 'omniauth' 
gem 'omniauth-facebook'

來源

2016-08-12 07:09:48 jethroo

是的，兩個寶石都已安裝。 –

這個答案其實是對的。這是我在cmd行缺乏理解，並把gem放在gemfile中。不只是通過cmd線安裝。 –

omniauth facebook未初始化常量錯誤

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