gistfile1.rb

articles = Article.find(:all)

articles.each do |article|
  next if article.published_at.nil?
  published_at = article.published_at
  
  year  = published_at.strftime('%Y')
  month = published_at.strftime('%m')
  day   = published_at.strftime('%d')
  
  published_at = "#{year}-#{month}-#{day}"

  author    = article.user.login
  permalink = article.permalink
  title     = article.title
  excerpt   = article.excerpt
  body      = article.body

  file_name = "#{published_at}-#{permalink}.md"
  file_path = article.published_at.nil? ? "draft/#{file_name}" : "posts/#{file_name}"

  fp = File.open(file_path, 'w')
  fp.write(%"
title: \"#{title}\"
author: #{author}
date: #{year}/#{month}/#{day}

#{excerpt}

~

#{body}")

  fp.close
end