db->field_exists('user_pota_lookup', 'users')) { $fields = array( 'user_pota_lookup integer DEFAULT 0 AFTER user_wwff_lookup', ); $this->dbforge->add_column('users', $fields); } } public function down() { if ($this->db->field_exists('user_pota_lookup', 'users')) { $this->dbforge->drop_column('users', 'user_pota_lookup'); } } }