WordPress template tags are a super-important and super-valuable part of WordPress, especially for theme development. They’re also one of the things I remember spending lots of time not quite getting as I was learning WordPress.

I’ve got a project that needs to treat WooCommerce category pages differently from its subcategory pages. Both use taxonomy-product_cat.php, though. What I’d really love to do is change just the search field in that template, depending on whether a particular page is showing a top-level category or a subcategory.