How do I run a rake task from Capistrano?

Question

I already have a deploy.rb that can deploy my app on my production server.

My app contains a custom rake task (a .rake file in the lib/tasks directory).

I\

Answer 1

I personally use in production a helper method like this:

def run_rake(task, options={}, &block)
  command = "cd #{latest_release} && /usr/bin/env bundle exec rake #{task}"
  run(command, options, &block)
end

That allows to run rake task similar to using the run (command) method.

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NOTE: It is similar to what Duke proposed, but I:

• use latest_release instead of current_release - from my experience it is more what you expect when running a rake command;
• follow the naming convention of Rake and Capistrano (instead of: cmd -> task and rake -> run_rake)
• don't set RAILS_ENV=#{rails_env} because the right place to set it is the default_run_options variable. E.g default_run_options[:env] = {'RAILS_ENV' => 'production'} # -> DRY!