class AddTimestampsToSpreeAssets < ActiveRecord::Migration
  def change
    add_column :spree_assets, :created_at, :datetime
    add_column :spree_assets, :updated_at, :datetime
  end
end

Add timestamps fields to spree_assets
Add timestamps fields to spree_assets

Initial motivation here was make assets_spec green. As of Rails 4.0.4
touching an object without timestamps won't touch its associations. Plus
timestamps are usually handy so no reason for not having them in
spree_assets too

See https://github.com/rails/rails/commit/73ba2c14cd7d7dfb2d132b18c47ade995401736f
