export_wp.rb

# RAILS_ENV=production bundle exec rails runner ./script/wp_export.rb >! blog.wxr
# Require nokogiri in Gemfile here

site_link = "http://tersesystems.com/"
site_name = "Terse Systems"

builder = Nokogiri::XML::Builder.new do |xml|
  xml.rss('version' => "2.0",
          'xmlns:content' => "http://purl.org/rss/1.0/modules/content/",
          'xmlns:wfw' => "http://wellformedweb.org/CommentAPI/",
          'xmlns:dsq' => "http://www.disqus.com/",
          'xmlns:dc' => "http://purl.org/dc/elements/1.1/",
          'xmlns:wp' => "http://wordpress.org/export/1.0/") do |xml|
    xml.channel do |xml|
      xml.title site_name
      xml.link site_link
      xml.language "en-us"
      xml.ttl "40"
      xml.description ""

      articles = Article.find(:all)
      articles.each do |a|
          xml.item do |xml|
            xml.title a.title
            xml.content("Hello world")
            xml.pubDate a.published_at.rfc2822
            xml.link "#{site_link}blog/#{a.published_at.strftime("%Y/%m/%d")}/#{a.permalink}"
            xml.guid "urn:uuid:#{a.guid}", "isPermaLink" => "false"
            author = a.user.name rescue a.author
            xml.author author
            xml['dc'].creator author
            for category in a.categories
              xml.category category.name
            end
            for tag in a.tags
              xml.category tag.display_name
            end
            xml['wp'].post_id a.id
            xml['wp'].post_date a.published_at.strftime("%Y-%m-%d %H:%M:%S")
            xml['wp'].comment_status 'closed'
            xml['wp'].ping_status 'closed'
            xml['wp'].post_name a.permalink
            xml['wp'].status 'publish'
            xml['wp'].post_parent '0'
            xml['wp'].post_type 'post'
            for comment in a.comments
              xml['wp'].comment do |xml|
                xml['wp'].comment_id comment.id
                xml['wp'].comment_author comment.author
                xml['wp'].comment_author_email comment.email
                xml['wp'].comment_author_url comment.url
                xml['wp'].comment_author_IP comment.ip
                xml['wp'].comment_date comment.published_at.strftime("%Y-%m-%d %H:%M:%S")
                xml['wp'].comment_content comment.body
                xml['wp'].comment_approved '1'
                xml['wp'].comment_parent '0'
              end
            end
         end
      end
    end
  end
end

puts builder.to_xml