auto_orient.rb

module Paperclip
  class AutoOrient < Paperclip::Processor 
    def initialize(file, options = {}, *args)
      @file = file
    end
  
    def make( *args )
      dst = Tempfile.new([@basename, @format].compact.join("."))
      dst.binmode
        
      Paperclip.run('convert',"#{File.expand_path(@file.path)} -auto-orient #{File.expand_path(dst.path)}")
      
      return dst
    end
  end
end