缺少Rails 2.2.2寶石

我對Linux比較陌生，但我試圖在Ubuntu 11.10上設置開發環境。我安裝了ruby 1.8和rails 2.2.2，但netbeans似乎告訴我，否則會出現以下錯誤。缺少Rails 2.2.2寶石

Missing the Rails 2.2.2 gem. Please gem install -v=2.2.2 rails, update your RAILS_GEM_VERSION setting in config/environment.rb for the Rails version you do have installed, or comment out RAILS_GEM_VERSION to use the latest version installed.

寶石列表

actionmailer (2.2.2) 
actionpack (2.2.2) 
activerecord (2.2.2) 
activeresource (2.2.2) 
activesupport (2.2.2) 
rack (1.0.1) 
rails (2.2.2) 
rake (0.9.2.2)

寶石列表-d軌

rails (2.2.2) 
Author: David Heinemeier Hansson 
Rubyforge: http://rubyforge.org/projects/rails 
Homepage: http://www.rubyonrails.org 
Installed at: /usr/lib/ruby/gems/1.8 

Web-application framework with template engine, control-flow layer, 
and ORM.

我見過類似的問題，但我還是一直沒能得到任何不同的結果。

來源

2012-01-31 Haronious