现在是在 windows 机器上开发，马上要发布到 heroku 上，现在需要在后台添加一个每天执行的任务，可是我在装了 rufus-scheduler 之后，把 task.rb 也加上了，后面就启动不起来出错了，求助啊？
rails s
=> Booting WEBrick
=> Rails 3.2.1 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting
d:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:251:in require':
cannot load such file -- rufus/scheduler (LoadError)
from d:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:251:i
nblock in require'
from d:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:236:i
n load_dependency'
from d:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:251:i
nrequire'
from d:/work/ruby/ruby_work/nwmi1/config/initializers/task.rb:2:in `'
我自己来给自己回答一下吧，我的问题搞定了，是因为没有在 environment.rb require 我的 task 文件导致的，现在在 windows 下酒可以像 linux 下面的 cron 那样完成定时定期任务了
task.rb 放在 initializers 目录下不用添加“scheduler.join”吧？如果是放在 script 目录里才需要加上 scheduler.join。