How to display errors from a custom controller in the view cart page?

Question

I've created a custom controller to add multiple items from a grid view to the cart all at one time.

Works just fine - the problem is the success and error messages are not being displayed on the view cart page.

Here is the controller:

<?php
 class BigBlockStudios_UpdateCart_ManageController extends Mage_Core_Controller_Front_Action {
 // add multiple products to the cart
 public function multipleProdAddAction() {
 $redirect = isset($_POST['redirect']) ? $_POST['redirect'] : 'checkout/cart';
 $success = '';
 $errors = '';
 $cart = Mage::helper('checkout/cart')->getCart();
 $items = $_POST['data'];
 foreach($items as $key => $item){
 $sku = $item['sku'];
 $qty = $item['qty'];
 $id = Mage::getModel('catalog/product')->getIdBySku($sku);
 if(!$id || $qty <= 0) {
 unset($items[$key]);
 }else{
 try {
 $params = array('qty' => $qty);
 $id = Mage::getModel('catalog/product')->getIdBySku($sku);
 $product = Mage::getModel('catalog/product')->load($id);
 $cart->addProduct($product, $params);
 $success .= $product->getName(). " is successfully added into cart <br />";
 }catch(Exception $e) {
 $errors .= $e->getMessage() . '<br />';
 }
 }
 }
 $cart->save();
 if(strlen($success) > 1) {
 Mage::getSingleton('core/session')->addSuccess(Mage::helper('checkout')->__($success));
 }
 if(strlen($errors) > 1){
 Mage::getSingleton('core/session')->addError(Mage::helper('checkout')->__($errors));
 }
 $this->_redirect($redirect);
 } // multipleProdAddAction()
 } // controller
?>

The view cart page is displaying messages, if I add an item from a default product page, I get the success message.

What is the correct way of doing this?

Answer 1

Right now you have set the message in core/session. Have to set message in checkout/session to get it in checkout page.

Mage::getSingleton('checkout/session')->addError(Mage::helper('checkout')->__($errors));

Magento has set the message in checkout session while adding a product to cart.

Refer this files

• Sean Kimball: ok- perfect - thanks... so hmmm. you can see that I have a variable on where to redirect the page to. Say I redirected it somewhere else [account/whatever]. is there a global/session? will something like that display errors "anywhere"?