"rails -v"错误

Question

我正在开发Mac Snow Leapord

在安装RVM之前，我已经尝试(但失败)升级OSX的默认ruby。

使用

完成Ruby的安装

rvm install 1.9.2

with ruby -v:

ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-darwin10.7.0]

gem是1.7.2安装有sudo gem install rails的滑道Rails已经安装，没有错误提示。

With rails -v:

/Users/kyle/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems.rb:926:in `report_activate_error': Could not find RubyGem rails (>= 0) (Gem::LoadError)
    from /Users/kyle/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems.rb:244:in `activate_dep'
    from /Users/kyle/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems.rb:236:in `activate'
    from /Users/kyle/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems.rb:1307:in `gem'
    from /Users/kyle/.rvm/rubies/ruby-1.9.2-p180/bin/rails:18:in `<main>'

我已经安装了gem，否则我就不能做gem install rails

有人知道原因或解决办法吗?

Answer 1

问题是当您使用rvm时使用sudo安装rails。试试这个:

$ rvm use 1.9.2
$ gem install rails

HTH

Answer 2

是否为当前用户安装gem install rails(而不是sudo) ?