Help with updating to 3.0

MY_Model:

public function save($data, $id = NULL) {

Siteconfig:

public function save($key, $value) {

The second one has to be compatible with the first, meaning Siteconfig:ave() must have a default value on the second argument.

The comment made by dbui earlier about the name of the __construct method should be addressed as well.

Bonfire

Practical CodeIgniter 3
CodeIgniter Testing Guide