rake db：migrate在Rails错误中给出了一个未初始化的类变量@@ configuration

Question

uninitialized class variable @@configuration in Rails
/usr/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/initializer.rb:19:in `configuration'
/usr/lib/ruby/gems/1.8/gems/thoughtbot-factory_girl-1.2.2/lib/factory_girl.rb:24
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'

这是environment.rb的初始部分：

RAILS_GEM_VERSION = '2.1.0' unless defined? RAILS_GEM_VERSION

require File.join(File.dirname(__FILE__), 'boot')

Rails::Initializer.run do |config|

  config.gem "oauth", :version => "0.2.7", :lib => "oauth"

Answer 1

factory_girl 1.2.2与Rails 2.1兼容吗？尝试使用较新版本的Rails。尝试没有factory_girl。