freegenie

#Deploy and rollback on Heroku in staging and production
task :deploy_staging => ['deploy:set_staging_app', 'deploy:push', 'deploy:restart', 'deploy:tag']
task :deploy_production => ['deploy:set_production_app', 'deploy:push', 'deploy:restart', 'deploy:tag']

namespace :deploy do
  PRODUCTION_APP = 'YOUR_PRODUCTION_APP_NAME_ON_HEROKU'
  STAGING_APP = 'YOUR_STAGING_APP_NAME_ON_HEROKU'

  task :staging_migrations => [:set_staging_app, :push, :off, :migrate, :restart, :on, :tag]
  task :staging_rollback => [:set_staging_app, :off, :push_previous, :restart, :on]

freegenie

module PaperclipMongoidPatch
  class << self 
    def obtain_class
      class_name = ENV['CLASS'] || ENV['class']
      raise "Must specify CLASS" unless class_name
      @klass = Object.const_get(class_name)
    end

    def obtain_attachments
      name = ENV['ATTACHMENT'] || ENV['attachment']