Question

As in title: How to detect that loaded ORM object has changed (current values are different than values in db table)?

Answer 1

ORM keeps an array named ‘changed’ to track the changes in column you can check it like this.

public function save()
{
    if (isset($this->changed['name']))
    {
        // set the slug when the name changes -- 'my-post-name'
    $this->slug = url::title($this->name);
    }
}

Check this link – http://docs.kohanaphp.com/libraries/orm => changed