Capistrano rake recipes

gistfile1.rb

# [NOTE!] namespace :rake cannot be used because 'rake' is already used as capistrano variable.
# #{rake} will be #<Capistrano::Configuration::Namespaces::Namespace:0x103abdf48> and command will abort if namespace :rake is used.
namespace :raketask do

  desc "Show available rake tasks($ cap staging raketask:show_tasks)."
  task :show_tasks do
    run "cd #{latest_release} && #{rake} RAILS_ENV=#{rails_env} -T"
  end

  desc "Run a task on a remote server($ cap staging raketask:invoke task=a_certain_task)."
  # run like: cap staging raketask:invoke task=a_certain_task
  task :invoke do
    run "cd #{latest_release} && #{rake} RAILS_ENV=#{rails_env} #{ENV['task']}"
  end

  desc "Test to run a task on a remote server($ cap staging raketask:test_invoke task=about)."
  # run like: cap staging raketask:test_invoke task=about
  task :test_invoke do
    cmd = "cd #{latest_release} && #{rake} RAILS_ENV=#{rails_env} #{ENV['task']}"
    puts "'$ cap staging raketask:invoke task=#{ENV['task']}' will run next command on remote servers.\n#{cmd}"
  end
end