simple non-ascii stripping script

remove_non_ascii.rb

# courtesy http://stackoverflow.com/questions/1268289/how-to-get-rid-of-non-ascii-characters-in-ruby
class String
  def remove_non_ascii
    require 'iconv'
    Iconv.conv('ASCII//IGNORE', 'UTF8', self)
  end
end

Wiki.all.each { |w|
  w.content = w.content.remove_non_ascii
  w.abstract = w.abstract.remove_non_ascii
  w.save
}