<?php
App::uses('Widget','Controller/Widgets');
class MyNotesWidget extends Widget {
    public function beforeRender(Controller $controller) {
        $this->Note = MooCore::getInstance()->getModel('Note');
        $notes = $this->Note->find('all', array(
            'conditions' => array('uri' => $controller->request->here),
            'limit' => 1,
            'order' => array('Note.id' => 'DESC')
        ));
        $controller->set('notes',$notes);
    }