安装gem factory_girl和ruby版本时出错

Question

I try to install skylinecms but I have a problem with installing the gem.
The gem factory_girl asked me to use version> = 1.9.2 of Ruby

atmoner@atmoner:~/base_ror$ sudo gem install skylinecms
ERROR:  Error installing skylinecms:
    factory_girl requires Ruby version >= 1.9.2.

ruby -v

atmoner@atmoner:~/base_ror$ ruby -v
ruby 1.9.3p286 (2012-10-12 revision 37165) [x86_64-linux]

I have tried to change ruby version to 1.9.2

atmoner@atmoner:~/base_ror$ rvm use 1.9.2
Using /home/atmoner/.rvm/gems/ruby-1.9.2-p320

But still same problem

atmoner@atmoner:~/base_ror$ sudo gem install skylinecms
ERROR:  Error installing skylinecms:
    factory_girl requires Ruby version >= 1.9.2.

what's the source of this problem?
you have an idea?

Answer 1

You shouldn't use sudo with rvm , as it creates a new subshell with a completely new environment. See more about sudo and rvm here: RVM and 'sudo'

Most likely your system ruby version is 1.8.7 , and that is what is getting invoked when you run sudo gem install skylinecms . You can verify that with the following commands:

rvm use system
ruby -v

Try installing the skylinecms gem without sudo .

Best to use per-project gemsets as suggested in rvm best practices