db->field_exists('reset_password_code', 'users')) { $fields = array( 'reset_password_code varchar(50) DEFAULT NULL', ); $this->dbforge->add_column('users', $fields); } if (!$this->db->field_exists('reset_password_date', 'users')) { $fields = array( 'reset_password_date TIMESTAMP NULL DEFAULT NULL', ); $this->dbforge->add_column('users', $fields); } } public function down() { $this->dbforge->drop_column('users', 'reset_password_code'); $this->dbforge->drop_column('users', 'reset_password_date'); } }