局部变量或方法`config'for main：Object（NameError） [英] local variable or method `config' for main:Object (NameError)

问题描述

我正在关注这个帖子来整合Omniauth Twitter + Devise http://sourcey.com/rails-4-omniauth-using-devise-with-twitter-facebook-and-linkedin/ ，我遇到一个阻止我启动我的问题rails应用程序。

  /Users/javier/Desktop/definitive/config/environment.rb:8:in`< top（必需）>'：未定义的局部变量或方法`config'for main：Object（NameError）
 from /Users/javier/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/ lib / active_support / dependencies.rb：247：在`require'
 from /Users/javier/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb ：247：在`block in require'
 from /Users/javier/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:232:in`来自/Users/javier/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/的load_dependency'
 active_support / dependencies.rb：247：在`require'
 from /Users/javier/Desktop/definitive/config.ru:3:in`block in< main>'
 from / Users / javier /.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:55:in`instance_eval'
 from /Users/javier/.rvm/gems/ruby -2.1.2 / gems / rack-1.5.2 / lib / rack / builder.rb：55：在`initialize'
 from /Users/javier/Desktop/definitive/config.ru:in`new'$来自/Users/javier/.rvm/gems/ruby-2.1.2/gems/rack-1.5中的/Users/javier/Desktop/definitive/config.ru:in< main>'
的b $ b .2 / lib / rack / builder.rb：49：在`eval'
 from /Users/javier/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/ builder.rb：49：在`new_from_string'
 from /Users/javier/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:40:in `parse_file'
 from /Users/javier/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:277:in`build_app_and_options_from_config'
来自/Users/javier/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:199:in`app 
来自/Users/javier/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/server.rb:50:in`app'
 from /Users/javier/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:314:in`wrapped_app'
 from /Users/javier/.rvm /gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/server.rb:130:in`log_to_stdout'
 from /Users/javier/.rvm/gems/ruby- 2.1.2 / gems / railties-4.1.1 / lib / rails / commands / server.rb：67：在`start'
 from /Users/javier/.rvm/gems/ruby-2.1.2/gems /railties-4.1.1/lib/rails/commands/commands_tasks.rb:81:in'在服务器'
从/Users/javier/.rvm/gems/ruby-2.1.2/gems/railties- 4.1.1 / lib / rails / commands / commands_tasks.rb：76：在`tap'
 from /Users/javier/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib /rails/commands/commands_tasks.rb:76:in`server'
 from /Users/javier/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/ commands_tasks.rb：40：在`run_command！'
 from /Users/javier/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/ rails / commands.rb：17：在`< top（required）>'
 from / Users / javier / Desktop / definitive / bin / rails：8：在`require'
 from / Users / javier / Desktop / definitive / bin / rails：8：在`< top（required）>'
 from /Users/javier/.rvm/gems/ruby-2.1.2/gems/spring-1.1 .3 / lib / spring / client / rails.rb：27：在`load'
 from /Users/javier/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/ spring / client / rails.rb：27：在`call'
 from /Users/javier/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/client/command .rb：7：在`call'
 from /Users/javier/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/client.rb:26:in`从/Users/javier/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/bin/spring:48:in运行'
'< top（required）>'
从/Users/javier/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/binstub.rb:11:in`load'
 from / Users / javier /.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/binstub.rb:11:in`< top（required）>'
 from / Users / javier /桌面/权威/斌/春：1 6：在`require'
 from / Users / javier / Desktop / definitive / bin / spring：16：in`< top（required）>'
 from bin / rails：3：从bin / rails加载'
：3：在`< main>'
  

猜测问题是在$ code> config / environment.rb 的第8行，但找不到正确的修复。可能的是，environment.rb应该包含在config / environments /中？

解决方案

一些代码：

  config / environments / [environment] .rb 
  pre> 
 
 
其中 [environment] .rb 旨在表示以下文件之一：
  config / environments / development.rb 
 config / environments / production.rb 
 config / environments / test.rb 
  
您还可以将代码放在 config / application.rb 如果您想要在不同的环境中使用相同的设置。
 
 
 
显示的代码行以 config。* ，并将它们放在 Rails.application.configure do 块中。
 
 
 
 只是一个 require 和 Rails.application.initialize！ / code>，并且不需要修改。
 
I'm following this post for integrating Omniauth Twitter + Devise http://sourcey.com/rails-4-omniauth-using-devise-with-twitter-facebook-and-linkedin/ and I have encounter an issue that is blocking me to start my rails app.
 /Users/javier/Desktop/definitive/config/environment.rb:8:in `<top (required)>': undefined     local variable or method `config' for main:Object (NameError)
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:247:in `require'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:247:in `block in require'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:232:in `load_dependency'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:247:in `require'
from /Users/javier/Desktop/definitive/config.ru:3:in `block in <main>'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize'
from /Users/javier/Desktop/definitive/config.ru:in `new'
from /Users/javier/Desktop/definitive/config.ru:in `<main>'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:49:in `eval'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:49:in `new_from_string'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:40:in `parse_file'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:277:in `build_app_and_options_from_config'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:199:in `app'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/server.rb:50:in `app'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:314:in `wrapped_app'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/server.rb:130:in `log_to_stdout'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/server.rb:67:in `start'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:81:in `block in server'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:76:in `tap'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:76:in `server'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:40:in `run_command!'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands.rb:17:in `<top (required)>'
from /Users/javier/Desktop/definitive/bin/rails:8:in `require'
from /Users/javier/Desktop/definitive/bin/rails:8:in `<top (required)>'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/client/rails.rb:27:in `load'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/client/rails.rb:27:in `call'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/client/command.rb:7:in `call'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/client.rb:26:in `run'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/bin/spring:48:in `<top (required)>'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/binstub.rb:11:in `load'
from /Users/javier/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/binstub.rb:11:in `<top (required)>'
from /Users/javier/Desktop/definitive/bin/spring:16:in `require'
from /Users/javier/Desktop/definitive/bin/spring:16:in `<top (required)>'
from bin/rails:3:in `load'
from bin/rails:3:in `<main>'
I guess the issue is in the line 8 of config/environment.rb but can not find with the right fix. Is it possible that environment.rb should be included in 'config/environments/'?
解决方案
The article states that you should put some code in:
config/environments/[environment].rb
Where [environment].rb is meant to signify one of the following files:
config/environments/development.rb
config/environments/production.rb
config/environments/test.rb
You could also put the code in config/application.rb if you want the same settings across your different environments.

The lines of code shown start with config.*, and they should be placed inside the Rails.application.configure do block.

config/environment.rb in a typical Rails 4 application is just a require and Rails.application.initialize!, and should not need modification.

                        
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