Now is solved, just in case that somebody will has the same problem, here is the solution, the view was right, I just change the controller part:
*collection_action :status_race, :method => :post do* * * * uploaded_io = params[:routes_status_race][:uploaded_data]* * * * File.open(Rails.root.join('app/importers', 'uploads', uploaded_io.original_filename), 'w') do |file|* * file.write(uploaded_io.read)* * end* * RoutesQuickcom.new()* * render "status_race"* * end* -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/ZKMkra8HGRgJ. For more options, visit https://groups.google.com/groups/opt_out.