batch uploading data and using file_column

I think the best way is to handle such cases manually and not alter the file_column. Something like that:

require 'open-uri'

uri = ""

open(uri) do |remote|   uploadedfile = end

filename = File.basename(uri) (class << uploadedfile; self; end).class_eval do   define_method(:local_path) { "" }   define_method(:original_filename) { filename }   define_method(:content_type) { "application/octet-stream" } end

Then assign this uploadedfile to file_column attribute.

Clare wrote:

Thank you very much for replying but sadly I'm not yet good enough to understand your fancy code.

Sorry i usually have a better crack at solving issues but I don't understand what is going on in the section that begins (class << uploadedfile; self; end).class_eval. If you get time to reply that would be excellent, if not thanks for giving me something to investigate further.

"class << uploadedfile; self; end" is a common technique to get singleton class for that very instance to be able to extend it. I think it could be done in a more simple way, I just took a code from file_column's test method that simulate an uploaded file. In Rails, uploaded file is an IO object or the like (which has "read" method) extended with some instance methods (local_path, original_filename, content_type).

Regarding your error, I think you haven't required 'open-uri' library and this line      uploadedfile = haven't got executed. That's probably why you've got "undefined variable" error. I suggest you to put all the code inside open(uri) block so you'll ensure that nothing will happen if it is unable to open that uri.