Determine if on product page programmatically in Magento

Question

I want to insert tracking codes on all of the pages of a Magento site, and need to use a different syntax if the page is a CMS page, a category browsing page, or a product view page. I have a custom module set up with a block that inserts a generic tracking code on each page for now. From within the block, how can I distinguish between CMS pages, category pages, and product pages?

I started with:

Mage::app()->getRequest();

I can see that

Mage::app()->getRequest()->getParam('id');

returns the product or category ID on product and category pages, but doesn't distinguish between those page types.

Mage::app()->getRequest()->getRouteName();

return "cms" for CMS pages, but returns "catalog" for both category browsing and product view pages, so I can't use that to tell category and product pages apart.

Is there some indicator in the request I can use safely? Or is there a better way to accomplish my goal of different tracking codes for different page types?

Answer 1

There may be an even better way to do this using routers, but one fast way is to check the registry to see if we have a single product that we are looking at:

<?php

$onCatalog = false;
if(Mage::registry('current_product')) {
    $onCatalog = true;
}

Hope that helps!

Thanks, Joe

Answer 2

For any Category / Product page, you are getting the ID from:-

Mage::app()->getRequest()->getParam('id');

Now try the below code:-

<?php
$tempProduct = Mage::getModel('catalog/product')
               ->load(Mage::app()->getRequest()->getParam('id'));
if(!empty($tempProduct->getSku())) {
    echo 'Inside the Product page definitely';
}
?>  

Since Sku will only be available for Products, so you have a very good chance to identify whether the current page is a product page / not.