kaikuchn

class Arm < ActiveRecord::Base
  belongs_to :bandit, inverse_of: :arm
  
  # instead of validating this here, you could also add a uniqueness
  # constraint through a migration. Behavior would be similiar.
  validates :bandit, uniqueness: true
end

kaikuchn

root@vmd3328:/var/www/bochumbbdevgroup/current# curl -s https://gist.githubusercontent.com/mislav/4728286/raw/rbenv-doctor.sh | bash -x 2>&1
+ rbenv --version
rbenv 0.4.0-98-g13a474c
+ rbenv versions
  2.1.0
* 2.1.2 (set by /var/www/bochumbbdevgroup/current/.ruby-version)
+ rbenv global
2.1.2
+ env
+ grep -E 'PATH|RUBY|BUNDLE|RBENV'