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我正在使用nitrous.io關注Michael Hartl的Ruby on Rails教程。現在我正在嘗試使用scaffold命令，它返回一個NoMethodError。我很新的編碼，所以我不知道錯誤的原因，但這裏正是發生的事情：使用「rails生成腳手架」時出現NoMethodError
~/workspace/rails_projects/demo_app(master)$ rails generate scaffold User name:string email:string
/home/action/workspace/rails_projects/demo_app/config/environments/development.rb:1:in `<top (required)>': undefined method `configure' for #<DemoAppp::Application:0x007fa3572a63e8> (NoMethodError)
from /home/action/.gem/ruby/2.1.1/gems/activesupport-4.0.5/lib/active_support/dependencies.rb:229:in `require'
from /home/action/.gem/ruby/2.1.1/gems/activesupport-4.0.5/lib/active_support/dependencies.rb:229:in `block in require'
from /home/action/.gem/ruby/2.1.1/gems/activesupport-4.0.5/lib/active_support/dependencies.rb:214:in `load_dependency'
from /home/action/.gem/ruby/2.1.1/gems/activesupport-4.0.5/lib/active_support/dependencies.rb:229:in `require'
from /home/action/.gem/ruby/2.1.1/gems/railties-4.0.5/lib/rails/engine.rb:591:in `block (2 levels) in <class:Engine>'
from /home/action/.gem/ruby/2.1.1/gems/railties-4.0.5/lib/rails/engine.rb:590:in `each'
from /home/action/.gem/ruby/2.1.1/gems/railties-4.0.5/lib/rails/engine.rb:590:in `block in <class:Engine>'
from /home/action/.gem/ruby/2.1.1/gems/railties-4.0.5/lib/rails/initializable.rb:30:in `instance_exec'
from /home/action/.gem/ruby/2.1.1/gems/railties-4.0.5/lib/rails/initializable.rb:30:in `run'
from /home/action/.gem/ruby/2.1.1/gems/railties-4.0.5/lib/rails/initializable.rb:55:in `block in run_initializers'
from /home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/tsort.rb:226:in `block in tsort_each'
from /home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component'
from /home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/tsort.rb:418:in `block (2 levels) in each_strongly_connected_component_from'
from /home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/tsort.rb:427:in `each_strongly_connected_component_from'
from /home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/tsort.rb:417:in `block in each_strongly_connected_component_from'
from /home/action/.gem/ruby/2.1.1/gems/railties-4.0.5/lib/rails/initializable.rb:44:in `each'
from /home/action/.gem/ruby/2.1.1/gems/railties-4.0.5/lib/rails/initializable.rb:44:in `tsort_each_child'
from /home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/tsort.rb:411:in `call'
from /home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/tsort.rb:411:in `each_strongly_connected_component_from'
from /home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/tsort.rb:347:in `block in each_strongly_connected_component'
from /home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/tsort.rb:345:in `each'
from /home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/tsort.rb:345:in `call'
from /home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/tsort.rb:345:in `each_strongly_connected_component'
from /home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/tsort.rb:224:in `tsort_each'
from /home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/tsort.rb:205:in `tsort_each'
from /home/action/.gem/ruby/2.1.1/gems/railties-4.0.5/lib/rails/initializable.rb:54:in `run_initializers'
from /home/action/.gem/ruby/2.1.1/gems/railties-4.0.5/lib/rails/application.rb:215:in `initialize!'
from /home/action/workspace/rails_projects/demo_app/config/environment.rb:5:in `<top (required)>'
from /home/action/.gem/ruby/2.1.1/gems/railties-4.0.5/lib/rails/application.rb:189:in `require'
from /home/action/.gem/ruby/2.1.1/gems/railties-4.0.5/lib/rails/application.rb:189:in `require_environment!'
from /home/action/.gem/ruby/2.1.1/gems/railties-4.0.5/lib/rails/commands.rb:44:in `<top (required)>'
from bin/rails:8:in `require'
from bin/rails:8:in `<main>'
對我來說，似乎是出於某種原因對development.rb的路徑是不正確的一個，但我只是猜測。
有沒有這樣的運氣？ – zeantsoi
嗯，我在使用rails新命令時拼錯了名字。起初我將文件夾的名稱改爲demo_app，但看起來我沒有做到這一點。我將重新開始這個應用程序。謝謝！ – oquiroz