deploy.rb

RAKE = '/usr/bin/env '                            +
  '`'                                             +
    '/usr/bin/env bundle check >/dev/null 2>&1; ' +
    'case $? in '                                 +
    # Exit code 0: bundle is defined and installed
    # Exit code 1: bundle is defined but not installed
    '0|1 ) '                                      +
      'echo bundle exec '                         +
      ';; '                                       +
    'esac'                                        +
  '` '                                            +
  'rake'

namespace :daemons do
  
  task :start, roles: :app do
    run "cd #{current_path} && #{RAKE} daemons:start RAILS_ENV=#{rails_env}"
  end
  
  task :stop, roles: :app do
    run "cd #{current_path} && #{RAKE} daemons:stop RAILS_ENV=#{rails_env}"
  end
end