mapping.rb

class Mapping < ActiveRecord::Base
  belongs_to :user
  require "CSV"
  
  has_attached_file :csv_file,
    :path => ":rails_root/public/system/mapping/:id/:filename",
    :url => "/system/mapping/:id/:filename" 
  
  # after_create :create_csv
  def get_csv_headers
    c = CSV.table(self.csv_file.path)
    return c.headers
  end
  
  def create_csv
    c = CsvFile.new
    c.csv_file = self.csv_file
    c.save
  end

end