be9

def paginate(scope, default_per_page = 20)
  collection = scope.page(params[:page]).per((params[:per_page] || default_per_page).to_i)

  current, total, per_page = collection.current_page, collection.num_pages, collection.limit_value

  return [{
    pagination: {
      current:  current,
      previous: (current > 1 ? (current - 1) : nil),
      next:     (current == total ? nil : (current + 1)),

johnjohndoe

#!/usr/bin/env ruby
#
# Ruby script to download a number of files
# from individual URLs via HTTP/HTTPS/FTP
# specified in an external file.
#
# Author: Tobias Preuss
# Revision: 2013-04-18 16:26 +0100 UTC
# License: Creative Commons Attribution-ShareAlike 3.0 Unported