cakePHP Treeview Controllers

<?php
App::uses('Controller', 'Controller');
class AppController extends Controller {

  public function beforeFilter() {
    parent::beforeFilter();
    Controller::loadModel('Histories');
    $histories = $this->Histories->__getAll();
    $root = array();
    foreach ($histories as $key => $value) {
      $child = array();
      foreach ($value["ChildPage"] as $cKey => $cVal) {
        array_push($child, array(
            "company" => $cVal["company"]
            , "industry" => $cVal["industry"]
            , "period_from" => $cVal["period_from"]
            , "period_to" => $cVal["period_to"]
            , "occupation" => $cVal["occupation"]
            , "concentration" => $cVal["concentration"]
            , "jobDescription" => $cVal["jobDescription"]
        ));
      }
      array_push($root, array("Types" => $value["Histories"]["types"], "Values" => $child));
    }
    $this->set('resumes', $root);
  }

}