当我检查rails -v
我得到
Rails 4 prefers to run on Ruby 2.0.
You're running
ruby 1.8.7 (2012-02-08 patchlevel 358) [universal-darwin12.0]
Please upgrade to Ruby 1.9.3 or newer to continue.
但是,我已经安装了 2.0.0。当我跑步时,ruby -v
我得到:
ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-darwin12.3.0]
我应该怎么办?