<?php
abstract class Meldels_Controller_Action extends Zend_Controller_Action
{
    public function preDispatch()
    {
        $action = $this->getFrontController()->getDispatcher()->formatActionName(
            $this->getRequest()->getActionName()
        );
        $classeRefletida = new Zend_Reflection_Class($this);
        $metodoRefletido = $classeRefletida->getMethod($action);
        try {
            $docblockRefletido = $metodoRefletido->getDocblock();
        } catch (Zend_Reflection_Exception $e) {}

        if (isset($docblockRefletido)) {
            if ($docblockRefletido->hasTag('AutenticacaoObrigatoria')) {
                if (!Zend_Auth::getInstance()->hasIdentity()) {
                    $this->_helper->redirector->gotoSimple('login', 'autenticacao');
                }

                $gruposPermitidos = array_map(function ($v) {return trim($v);},
                    explode(
                        ',',
                        $docblockRefletido->getTag('AutenticacaoObrigatoria')
                            ->getDescription()
                        )
                );
            }
        }
    }
}