WooCommerce: Count External Product Clicks

Yeah Google Analytics is cool, but have you ever coded your own tracking functions within your WooCommerce website?

An example may be counting the number of times customers click on the “Buy product” button that displays on the Single External Product Page, and show the counter in the Products Table in the backend.

For example, I use this to calculate the Click Through Rate (% clicks / views) and see how popular an external product is. Of course, you could also decide to extend the counter to all products (simple, variable, etc.) and count the number of times customers click on the Add to Cart, but for today let’s stick to the external products count. Enjoy!

Let’s count the number of times customers click on the “Buy product” button of an external/affiliate product on the single product page!
With the snippet below, I managed to add a “Clicks” column to the Products View, where the number of clicks on the external product “Buy product” button clicks are displayed!

PHP Snippet: Count External Product “Buy Product” Button Clicks & Display Counter @ Product Admin

Lots to learn today:

  1. First, we remove the default external product add to cart button, and code ours instead
  2. Some JS triggers the ‘increment_counter’ Ajax function on button click
  3. The ‘increment_counter’ Ajax function counts and stores the number of clicks
  4. The ‘manage_edit-product_columns’ and ‘manage_product_posts_custom_column’ display a new column in the Products admin page, and place the counter value in it
 * @snippet       External Product Button Click Counter
 * @how-to        Get CustomizeWoo.com FREE
 * @author        Rodolfo Melogli
 * @compatible    WooCommerce 7
 * @community     https://businessbloomer.com/club/

add_action( 'woocommerce_external_add_to_cart', 'bblomer_new_external_add_to_cart', 1 );

function bblomer_new_external_add_to_cart() {
	remove_action( 'woocommerce_external_add_to_cart', 'woocommerce_external_add_to_cart', 30 );
	add_action( 'woocommerce_external_add_to_cart', 'bbloomer_external_add_to_cart', 30 );

function bbloomer_external_add_to_cart() {
	global $product;
	if ( ! $product->add_to_cart_url() ) return;
	echo '<p><a href="' . $product->add_to_cart_url() . '" class="single_add_to_cart_button button alt countable" data-pid="' . $product->get_id() . '">' . $product->single_add_to_cart_text() . '</a></p>';
	wc_enqueue_js( "
			$.post( '" . '/wp-admin/admin-ajax.php' . "', { action: 'increment_counter', pid: $(this).data('pid') } );
	" );

add_action( 'wp_ajax_increment_counter', 'bbloomer_increment_counter' );
add_action( 'wp_ajax_nopriv_increment_counter', 'bbloomer_increment_counter' );

function bbloomer_increment_counter() {
	$pid = $_POST['pid'];
	$clicks = get_post_meta( $pid, '_click_counter', true ) ? (int) get_post_meta( $pid, '_click_counter', true ) + 1 : 1;
	update_post_meta( $pid, '_click_counter', $clicks );

add_filter( 'manage_edit-product_columns', 'bbloomer_admin_products_views_column', 9999 );

function bbloomer_admin_products_views_column( $columns ){
   $columns['clicks'] = 'Clicks';
   return $columns;

add_action( 'manage_product_posts_custom_column', 'bbloomer_admin_products_views_column_content', 9999, 2 );

function bbloomer_admin_products_views_column_content( $column, $product_id ){
	if ( $column == 'clicks' ) {
		echo get_post_meta( $product_id, '_click_counter', true );

Where to add custom code?

You should place custom PHP in functions.php and custom CSS in style.css of your child theme: where to place WooCommerce customization?

This code still works, unless you report otherwise. To exclude conflicts, temporarily switch to the Storefront theme, disable all plugins except WooCommerce, and test the snippet again: WooCommerce troubleshooting 101

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Rodolfo Melogli

Business Bloomer Founder

Author, WooCommerce expert and WordCamp speaker, Rodolfo has worked as an independent WooCommerce freelancer since 2011. His goal is to help entrepreneurs and developers overcome their WooCommerce nightmares. Rodolfo loves travelling, chasing tennis & soccer balls and, of course, wood fired oven pizza. Follow @rmelogli

2 thoughts on “WooCommerce: Count External Product Clicks

  1. Hi ๐Ÿ™‚
    Great thing!
    I use WCFM for a multivendor affiliate marketplace.
    Is it possible to extend the existing code for the vendor login?

    1. Hey Fabian, thanks so much for your comment! Yes, this is definitely possible, but I’m afraid it’s custom work. If you’d like to get a quote, feel free to contact me here. Thanks a lot for your understanding!

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