discourse/db/migrate/20200417183143_add_created_at_to_badge_user.rb

# frozen_string_literal: true
class AddCreatedAtToBadgeUser < ActiveRecord::Migration[6.0]
  def up
    add_column :user_badges, :created_at, :datetime, null: true
    execute "UPDATE user_badges SET created_at = granted_at WHERE created_at IS NULL"
    change_column :user_badges, :created_at, :datetime, null: false, default: "current_timestamp"
  end

  def down
    remove_column :user_badges, :created_at
  end
end