Ruby: Adding a column to a existing table.

Ruby

# -- Look at the name "add password to the table Users" with a encrypted_password column
# rails generate migration add_password_to_users encrypted_password:string


class AddPasswordToUsers < ActiveRecord::Migration
  def self.up
    add_column :users, :encrypted_password, :string
  end

  def self.down
    remove_column :users, :encrypted_password
  end
end