thetool/application/PreordercampaignOperator/PreordercampaignOperator.php

<?php

class PreordercampaignOperator extends mfBaseModel
{
    private $operator;
    private $preordercampaign;
    private $isps;

    protected function beforeUpdate($data) {
        if(!array_key_exists("edit_by", $data)) {
            $me = new User();
            $me->loadMe();
            $data["edit_by"] = $me->id;
        }

        return $data;
    }

    protected function beforeDelete() {
        // delete all ISPs
        foreach(PreordercampaignOperatorIspModel::search(["campaignoperator_id" => $this->id]) as $isp) {
            $isp->delete();
        }
        return true;
    }

    public function getProperty($name) {
        if($this->$name == null) {

            if($name == "isps") {
                $isps = PreordercampaignOperatorIspModel::search(["campaignoperator_id" => $this->id]);
                if(!$isps) {
                    return [];
                }
                foreach($isps as $isp) {
                    $this->isps[$isp->isp_id] = $isp;
                }

                return $this->isps;
            }

            if($name == "operator") {
                $operator = new Address($this->operator_id);
                if(!$operator->id) {
                    return null;
                }

                $this->operator = $operator;
                return $this->operator;
            }

            $classname = ucfirst($name);
            $idfield = $name."_id";
            $this->$name = mfValuecache::singleton()->getMfObject($classname, $this->$idfield);
            if(!$this->$name) {
                return null;
            }
        }

        return $this->$name;
    }
}