As you know, the WooCommerce Single Product Page displays a set amount of related products (usually 4). But despite the fact that you can customize the number of related products via code, there is no setting that allows you to have a “LOAD MORE” button instead.
My goal is therefore to show as many Related Products as the user wants without reloading the page, so that they can find out more potential matches and increase the chances to place an order.
I must say this took me the whole morning and it’s not yet finished. There are two small bugs: (1) the “Load More” button does not hide once there are no more related products and (2) once the current product’s related products are finished (so, after clicking on the load more button 1 or more times), the Ajax keeps showing the last related product as opposed to show none. Feel free to contribute if you wish to help!
Having said that, let’s see how to implement an Ajax “load more” feature. You can also reuse this on different projects (e.g. “load more blog posts”), because once you get to understand how Ajax works then you can do lots of cool stuff without refreshing the page.
Enjoy!
PHP Snippet: “Load More” Ajax Button @ WooCommerce Single Product Page Related Products
I’ve tried to comment each part of the snippet, so that you can learn a thing or two about Ajax.
Note: you probably need to also use some code to always show the same set of Related Products on load, otherwise the “Load More” function may show totally wrong results upon click.
/**
* @snippet Related Products Load More Button
* @how-to Get CustomizeWoo.com FREE
* @author Rodolfo Melogli
* @compatible WooCommerce 7
* @donate $9 https://businessbloomer.com/bloomer-armada/
*/
add_filter( 'woocommerce_product_loop_end', 'bbloomer_related_products_load_more_button' );
function bbloomer_related_products_load_more_button( $html ) {
// ONLY TARGET THE RELATED PRODUCTS LOOP
if ( wc_get_loop_prop( 'name' ) === 'related' ) {
// SHOW BUTTON
$html .= '<a class="button loadmore">Load More Related Products</a>';
// TRIGGER AJAX 'loadmore' ACTION ON CLICK
// AND APPEND MORE RELATED PRODUCTS
wc_enqueue_js( "
var page = 2;
var ajaxurl = '" . admin_url( 'admin-ajax.php' ) . "';
$('body').on('click', '.loadmore', function(evt) {
var data = {
'action': 'loadmore',
'page': page,
'product_id': " . get_queried_object_id() . ",
};
$.post(ajaxurl, data, function(response) {
if(response != '') {
$('.related .products ').append(response);
page++;
}
});
});
" );
}
return $html;
}
// DEFINE WHAT HAPPENS WHEN 'loadmore' ACTION TRIGGERS
add_action( 'wp_ajax_nopriv_loadmore', 'bbloomer_related_products_load_more_event' );
add_action( 'wp_ajax_loadmore', 'bbloomer_related_products_load_more_event' );
function bbloomer_related_products_load_more_event() {
// GET PARAMETERS FROM POSTED DATA
$paged = $_POST['page'];
$product_id = $_POST['product_id'];
// DEFINE USEFUL QUERY ARGS:
// 1. CURRENT PRODUCT
$product = wc_get_product( $product_id );
// 2. PAGINATION AND SORTING
$args = array(
'posts_per_page' => 3,
'paged' => $paged,
'orderby' => 'id',
'order' => 'desc',
);
// 3. IDS TO EXCLUDE: ON LOAD MORE, WE DONT WANT THE FIRST 3 RELATED PRODUCTS AGAIN
// SO WE APPLY AN OFFSET TO GET THE "NEXT 3" PRODUCTS
$exclude = array_slice( array_map( 'absint', array_values( wc_get_related_products( $product->get_id(), -1 ) ) ), 0 , $args['posts_per_page'] * ( $paged - 1 ) );
// LETS CALCULATE AND SORT RELATED PRODUCTS
$related_products = array_filter( array_map( 'wc_get_product', wc_get_related_products( $product->get_id(), $args['posts_per_page'], $exclude + $product->get_upsell_ids() ) ), 'wc_products_array_filter_visible' );
$related_products = wc_products_array_orderby( $related_products, $args['orderby'], $args['order'] );
// LETS DISPLAY THEM
foreach ( $related_products as $related_product ) {
$post_object = get_post( $related_product->get_id() );
setup_postdata( $GLOBALS['post'] =& $post_object );
wc_get_template_part( 'content', 'product' );
}
wp_die();
}