db/migrate/20120123184321_switch_to_paperclip.rb

   1 class SwitchToPaperclip < ActiveRecord::Migration[4.2]
   2   def up
   3     rename_column :users, :image, :image_file_name
   4   end
   5
   6   def down
   7     rename_column :users, :image_file_name, :image
   8   end
   9 end