rails g model xxxx xxx:ss xxx:yy 时，invoke factory_girl 这一步发生错误： .rvm/gems/[email protected]/gems/factory_girl_rails-4.2.0/lib/generators/factory_girl/model/model_generator.rb:21:in `generators': uninitialized constant FactoryGirl::Railtie (NameError)

spec_helper 里面有

config.include FactoryGirl::Syntax::Methods

config/application.rb里有

config.generators do |g|
   g.fixture_replacement :factory_girl, :dir => 'spec/factories'
end

对 factory_girl 的配置应该就这两个地方了，不解错误原因，求教，万分感谢。。。