如何显示来自控制器的信息以便在magento中查看？

Question

I will like to show message from controller to view in magento. In controller I have

    $arrError=Mage::getModel('advert/advert')->isValid(array('step1','step2'));
        if (!empty($arrError)) {
            $strReturnPath = $arrError['return_path'];
            unset($arrError['return_path']);
            foreach ($arrError as $strError) {
                Mage::getSingleton('customer/session')->addError( $strError );
                //var_dump($strError);

            }

            $this->_redirect($strReturnPath);
        }

        $this->loadLayout();
        $this->_initLayoutMessages('customer/session');

        $this->renderLayout();

And in view I have

<div id="messages_product_error_view">
    <?php

        Mage::app()->getLayout()->getMessagesBlock()->setMessages(Mage::getSingleton('customer/session')->getMessages(true));
        echo  Mage::app()->getLayout()->getMessagesBlock()->toHtml();
    ?>
</div>

In controller when I do a var_dump I can see the error messages. With redirect, the page does redirect to the view page. However, in the div I expect the message to be shown. ANd it is not showing Please please please help?

Answer 1

I think _redirect() method in controller does not stop script execution. It only sets up redirect headers. Because of that it still process loading layout, initializing layout messages and rendering it. This will make magento read messages in the same process and clear them before the actual redirect. Try adding this code after calling _redirect() method

$this->getResponse()->sendResponse();

or rearrange your code in this manner:

if (!empty($arrError)) {
        $strReturnPath = $arrError['return_path'];
        unset($arrError['return_path']);
        foreach ($arrError as $strError) {
            Mage::getSingleton('customer/session')->addError( $strError );
            //var_dump($strError);

        }

        $this->_redirect($strReturnPath);
    }
 else {
    $this->loadLayout();
    $this->_initLayoutMessages('customer/session');

    $this->renderLayout();
 }