我们如何在cakephp中扩展一个模型数据到另一个控制器 - How can we expand one model data in to another controller in cakephp?

How can we expand one model data in to another controller in cakephp?

如何将一个模型数据扩展到cakephp中的另一个控制器来检查条件?

   class UsersController extends AppController
{
public function beforeFilter()
{
    $this->loadModel('Apages');
    $usr=$this->Apages->find('all');
    $this->loadModel('Pagepermissions');
    $pre=$this->Pagepermissions->find('all',array('conditions'=>array('user_id'=>'1')));
if($pre->request->data['Pagepermissions']['_add']==1)
    {
        $this->redirect(array('controller'=>'users','action'=>'add'));
    }
    else
    {
        throw new NotFoundException(__("Don't have access this Page"));
    }
}
}

$pre->request->data['Pagepermissions']['_add']显示错误。请告诉我该怎么做

Thanks in Advance

$ preis数组，执行如下操作

$pre=$this->Pagepermissions->find('all',array('conditions'=>array('user_id'=>'1')));
 if(!empty($pre)){
    foreach($pre as $v){
        if($v['Pagepermissions']['_add']==1){
            $this->redirect(array('controller'=>'users','action'=>'add'));
            return;
        }else{
           throw new NotFoundException(__("Don't have access this Page"));
        }
    }
}else{
   throw new NotFoundException(__("user not find"));
}