CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-4rbenv
Dennis
Dennis

Reputation: 59509

Rails is not using my global Ruby version

I want to use Rails with Ruby 2.1.0, but it's using Ruby 1.9.3 (the system's version).

I'm using rbenv to manage my Ruby versions. My steps were something along the lines of:

$ rbenv install 2.1.0
$ rbenv global 2.1.0
$ sudo gem install rails -v 4.0.2
$ rbenv rehash
$ rbenv versions
  system
* 2.1.0 (set by /home/dennis/.rbenv/version)
$ ruby -v
ruby 2.1.0p0 (2013-12-25 revision 44422) [x86_64-linux]
$ rails new app && cd app
$ rails server

Rails is using is Ruby 1.9.3 (x86_64-linux), according to localhost:3000/rails/info/properties. A log message from rails server gives: INFO ruby 1.9.3 (2012-04-20) [x86_64-linux].

I think Rails is using the system version of Ruby because the versions match.

$ rbenv local system
$ ruby -v
ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]
$ rbenv local --unset  # Unset local Ruby version, go back to 2.1.0

Some things I've tried with no luck:

FWIW, I'm using Ubuntu 13.10 with the fish shell.

Upvotes: 9

Views: 8969

Answers (3)

ivalkeen
ivalkeen

Reputation: 1411

You didn't tell how you installed rbenv, but I think it is per-user installation (which is default). In this case you should install gems without using sudo. When you did sudo gem install rails, it was installed in system ruby, not rbenv's selected one.

Solution - install rails without sudo:

rbenv global 2.1.0
gem install rails
rbenv rehash

Upvotes: 9

nil
nil

Reputation: 2278

Sounds silly, but did you restart terminal session?

Otherwise try and type

 /bin/bash --login

Upvotes: 9

Agis
Agis

Reputation: 33626

Try creating a .ruby-version file in the root of your project with the following contents: 

2.1.0

Upvotes: 4

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