Uploading a file

documents_controller.rb

class DocumentsController < ApplicationController
  def create
    FileUtils.mv document.tempfile, upload_path
  end

private
  def document
    params[:document]
  end
  
  def upload_path
    Rails.public_path.join('uploads', document.original_filename)
  end
end

=begin
FileUtils.cp document.tempfile, upload_path

File.open upload_path, 'wb' do |f|
  f.write document.read
end
=end