undefined method `original_filename' for Upload - ruby-on-rails-3

Question

Can't seem to identify why I would be getting a undefined method original_filename, trying to do a file upload that checks the file extensions. Any ideas where im going wrong here
class SpreadsheetTagService
include Roo
def initialize(uploaded_file)
open_spreadsheet(File.new(uploaded_file.tempfile.path))
read_file(open_spreadsheet)
end
private
def read_file(file)
#spreadsheet = open_spreadsheet(file)
#spreadsheet.each_with_pagename do |name,sheet|
Rails.logger.debug( sheet )
end
end
def open_spreadsheet(file)
case File.extname(file.path)
when ".csv" then Csv.new(file.path, nil, :ignore)
when ".xls" then Excel.new(file.path, nil, :ignore)
when ".xlsx" then Excelx.new(file.path, nil, :ignore)
else raise "Unknown file type: #{file.original_filename}"
end
end
end
Controller
class SpreadsheetServiceController < ApplicationController
def new
end
def create
parser = SpreadsheetTagService.new(params[:spreadsheet][:file])
respond_to do |format|
format.all {render :json => 'Done'}
end
end
end

Answer 1

This one worked for me, removed the #{file.original_filename} from raise exception, modified the code so the file extension is saved properly:
class SpreadsheetTagService
include Roo
def initialize(uploaded_file)
ext = File.extname(uploaded_file.original_filename)
#tmp_destination = "#{Rails.root}/tmp/tag-import#{ext}"
#file_path = save_file_to_tmp(uploaded_file)
#file = File.new(#file_path)
read_file(#file)
end
private
def save_file_to_tmp(uploaded_file)
FileUtils.mv(uploaded_file.tempfile, #tmp_destination )
#tmp_destination
end
def read_file(file)
#spreadsheet = open_spreadsheet(file)
#spreadsheet.each_with_pagename do |name,sheet|
Rails.logger.debug( sheet )
end
end
def open_spreadsheet(file)
case File.extname(file.path)
when ".csv" then Csv.new(file.path, nil, :ignore)
when ".xls" then Excel.new(file.path, nil, :ignore)
when ".xlsx" then Excelx.new(file.path, nil, :ignore)
else raise "Unknown file type"
end
end
end