我试图使用rails-api gem设置一个rails json api，但是我很难让它像它应该的那样工作。
我正在学习本教程，因为我将为ember.js前端创建这个。
http://blog.jasonkriss.com/building-an-app-with-ember-app-kit-part-1/
捆绑（修复[第3行的问题]后）。
当我尝试生成捆绑后生成的模型时，我只是在终端中看到这样的内容......
/Users/jordanriser/workspace/Test/config/environments/development.rb:1:in `<top (required)>': undefined method `configure' for #<Test::Application:0x007f9bcb9b0640> (NoMethodError)
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/activesupport-4.0.4/lib/active_support/dependencies.rb:229:in `require'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/activesupport-4.0.4/lib/active_support/dependencies.rb:229:in `block in require'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/activesupport-4.0.4/lib/active_support/dependencies.rb:214:in `load_dependency'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/activesupport-4.0.4/lib/active_support/dependencies.rb:229:in `require'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/railties-4.0.4/lib/rails/engine.rb:591:in `block (2 levels) in <class:Engine>'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/railties-4.0.4/lib/rails/engine.rb:590:in `each'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/railties-4.0.4/lib/rails/engine.rb:590:in `block in <class:Engine>'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/railties-4.0.4/lib/rails/initializable.rb:30:in `instance_exec'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/railties-4.0.4/lib/rails/initializable.rb:30:in `run'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/railties-4.0.4/lib/rails/initializable.rb:55:in `block in run_initializers'
from /Users/jordanriser/.rbenv/versions/2.1.1/lib/ruby/2.1.0/tsort.rb:226:in `block in tsort_each'
from /Users/jordanriser/.rbenv/versions/2.1.1/lib/ruby/2.1.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component'
from /Users/jordanriser/.rbenv/versions/2.1.1/lib/ruby/2.1.0/tsort.rb:418:in `block (2 levels) in each_strongly_connected_component_from'
from /Users/jordanriser/.rbenv/versions/2.1.1/lib/ruby/2.1.0/tsort.rb:427:in `each_strongly_connected_component_from'
from /Users/jordanriser/.rbenv/versions/2.1.1/lib/ruby/2.1.0/tsort.rb:417:in `block in each_strongly_connected_component_from'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/railties-4.0.4/lib/rails/initializable.rb:44:in `each'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/railties-4.0.4/lib/rails/initializable.rb:44:in `tsort_each_child'
from /Users/jordanriser/.rbenv/versions/2.1.1/lib/ruby/2.1.0/tsort.rb:411:in `call'
from /Users/jordanriser/.rbenv/versions/2.1.1/lib/ruby/2.1.0/tsort.rb:411:in `each_strongly_connected_component_from'
from /Users/jordanriser/.rbenv/versions/2.1.1/lib/ruby/2.1.0/tsort.rb:347:in `block in each_strongly_connected_component'
from /Users/jordanriser/.rbenv/versions/2.1.1/lib/ruby/2.1.0/tsort.rb:345:in `each'
from /Users/jordanriser/.rbenv/versions/2.1.1/lib/ruby/2.1.0/tsort.rb:345:in `call'
from /Users/jordanriser/.rbenv/versions/2.1.1/lib/ruby/2.1.0/tsort.rb:345:in `each_strongly_connected_component'
from /Users/jordanriser/.rbenv/versions/2.1.1/lib/ruby/2.1.0/tsort.rb:224:in `tsort_each'
from /Users/jordanriser/.rbenv/versions/2.1.1/lib/ruby/2.1.0/tsort.rb:205:in `tsort_each'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/railties-4.0.4/lib/rails/initializable.rb:54:in `run_initializers'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/railties-4.0.4/lib/rails/application.rb:215:in `initialize!'
from /Users/jordanriser/workspace/Test/config/environment.rb:5:in `<top (required)>'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/activesupport-4.0.4/lib/active_support/dependencies.rb:229:in `require'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/activesupport-4.0.4/lib/active_support/dependencies.rb:229:in `block in require'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/activesupport-4.0.4/lib/active_support/dependencies.rb:214:in `load_dependency'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/activesupport-4.0.4/lib/active_support/dependencies.rb:229:in `require'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/railties-4.0.4/lib/rails/application.rb:189:in `require_environment!'
from /Users/jordanriser/.rvm/gems/ruby-2.1.1/gems/railties-4.0.4/lib/rails/commands.rb:44:in `<top (required)>'
from bin/rails:4:in `require'
from bin/rails:4:in `<main>'
我已经用Google搜索了未定义的方法＆＃39;配置＆＃39;＆＃34;但我似乎无法找到任何确切的答案。