db/migrate/20150330234954_gen_resource_picture_pictures.rb

   1 class GenResourcePicturePictures < ActiveRecord::Migration
   2   def up
   3     Picture.find_each do |picture|
   4       resource_picture_picture = ResourcePicturePicture.where(['picture_id = ?', picture.id]).first
   5       opid = picture.original_picture ? picture.original_picture.id : nil
   6       rpid = picture.original_picture.resource_picture ? picture.original_picture.resource_picture.id : nil
   7       if resource_picture_picture
   8       else
   9         resource_picture_picture = ResourcePicturePicture.new()
  10       end
  11       resource_picture_picture.original_picture_id = opid
  12       resource_picture_picture.resource_picture_id = rpid
  13       resource_picture_picture.picture_id = picture.id
  14
  15       resource_picture_picture.save!
  16     end
  17   end
  18
  19   def down
  20   end
  21 end