Mime::Type.register "*/*", :all Mime::Type.register "text/plain", :text Mime::Type.register "text/html", :html, %w( application/xhtml+xml ), %w( xhtml ) Mime::Type.register "text/javascript", :js, %w( application/javascript application/x-javascript ) Mime::Type.register "text/calendar", :ics Mime::Type.register "text/csv", :csv Mime::Type.register "application/xml", :xml, %w( text/xml application/x-xml ) Mime::Type.register "application/rss+xml", :rss Mime::Type.register "application/atom+xml", :atom Mime::Type.register "application/x-yaml", :yaml, %w( text/yaml ) # http://www.ietf.org/rfc/rfc4627.txt Mime::Type.register "application/json", :json, %w( text/x-json )