I am trying to develop a system in which a user can upload a slideshow (pdf) and it'll export each slide as a png. After some digging around I came across a post on here that suggested using a processor. I've had a go, but I cant get the command to run, if it is running then I don't know what is happening because no errors are being shown. Any help would be appreciated!

module Paperclip

class Slides < Processor

def initialize(file, options = {}, attachment = nill)
  super
  @file = file
  @instance = options[:instance]
  @current_format = File.extname(@file.path)
  @basename = File.basename(@file.path, @current_format)
end

def make
  dst = Tempfile.new( [ @basename, @format].compact.join("."))
  dst.binmode

  command = <<-end_command
    -size 640x300
    #{ File.expand_path(dst.path) }
    tester.png
  end_command
  begin
    success = Paperclip.run("convert", command.gsub(/\s+/, " ")))
  rescue PaperclipCommandLineError
    raise PaperclipError, "There was an error processing the

thumbnail for #{@basename}" end

end

end end

I think my problem is with the convert command... When I run that command by hand, it works but it doesn't give the details of each slide it just executes it. What I need to happen is once its made all the slides, pass back the data to a new model... or I know where all the slides are, but once I get to that point I'm not sure what todo.