No such file to load -- rufus-scheduler

Question

I'am developing a plugin in redmine how send mail every days , so i install rufus-scheduler and in my Gemfile i add this line

gem "rufus-scheduler "

and also i install the gem

sudo gem install rufus-scheduler --source http://gemcutter.org

and in my redmine/plugins/latest-issues-redmine-plugin/lib/latest_issues/view_hook_listener.rb i do this

class LatestIssuesViewHookListener < Redmine::Hook::ViewListener

    require File.join(File.dirname(__FILE__), '../../app/models/latest_issues_setup')
    require 'net/smtp'
    require 'rubygems'
    require 'rufus-scheduler

def load_issues   
 scheduler = Rufus::Scheduler.start_new   
 scheduler.every '1h' do
send_email "test@test.com", :body => html
  end
end
end        

Any ideas for this error ?

Thanks

Answer 1

sudo gem install rufus-scheduler --source http://gemcutter.org

installs rubygems via the "gem" command, which, usually, points to the "system" Ruby which is, usually again, not JRuby.

You could probably do

jruby -S gem install rufus-scheduler

to install the gem in the JRuby load path.

Answer 2

you write in your Gemfile

gem "rufus-scheduler "

shouldn't it be

gem "rufus-scheduler"

instead?

After adding the line, you'd have to run

bundle install

to let Bundler grab the rufus-scheduler gem (and update the Gemfile.lock file).

IIRC, upon starting the Rails application, Bundler should already have complained about not having rufus-scheduler around. That should have happened before the LoadError. So, are you starting the Rails app with Bundler? (How do you start it anyway?)

Answer 3

Try with

require 'rubygems' # tell ruby that you're using rubygems
require 'rufus-scheduler'

scheduler = Rufus::Scheduler.new # rufus-scheduler 3.0 style

scheduler.in '5s' do
  puts "order ristretto"
end
scheduler.every '10s' do
  puts "I feel like drinking coffee"
end

#scheduler.join

You seem to follow an old tutorial. The current readme for rufus-scheduler is at https://github.com/jmettraux/rufus-scheduler