Retrospring/db/migrate/20201001172537_add_otp_secret_key_to_users.rb

class AddOtpSecretKeyToUsers < ActiveRecord::Migration[5.2]
  def change
    add_column :users, :otp_secret_key, :string
    add_column :users, :otp_module, :integer, default: 0, null: false
  end
end