WP - Related Products

custom-filter-to-related-products.md

Sample to add filters on related products

With one Attribute

function filter_related_products_exclude_attribute_value( $related_product_ids, $product_id ) {

    $filtered_related_product_ids = array();

    foreach ( $related_product_ids as $related_product_id ) {
        $related_product = wc_get_product( $related_product_id );

        $attribute_value = $related_product->get_attribute( 'attribute_name_here' );

        if ( $attribute_value !== 'N/A' ) {
            $filtered_related_product_ids[] = $related_product_id;
        }
    }
    return $filtered_related_product_ids;
}

add_filter( 'woocommerce_related_products', 'filter_related_products_exclude_attribute_value', 10, 2 );

With one Custom Field

function filter_related_products_exclude_custom_field_value( $related_product_ids, $product_id ) {
    $filtered_related_product_ids = array();

    foreach ( $related_product_ids as $related_product_id ) {
        $custom_field_value = get_post_meta( $related_product_id, 'custom_field_name_here', true );
		if ( $custom_field_value !== 'N/A' ) {
            $filtered_related_product_ids[] = $related_product_id;
        }
    }

    return $filtered_related_product_ids;
}

add_filter( 'woocommerce_related_products', 'filter_related_products_exclude_custom_field_value', 10, 2 );

Using custom page with query

• Look to the meta_query

$related_products = get_posts(
	array(
		'category__in' => wp_get_post_categories( $post->ID ),
		'posts_per_page'  => 4,
		'post__not_in' => array( $post->ID ),
		'post_type'    => 'product',
		'orderby'      => 'rand ',
		'tax_query' => [
			'relation' => 'AND',
			[
				'taxonomy' => 'attribute_one_here',
				'field'    => 'slug',
				'terms'    => 'the condition here',
			],
			[
				'taxonomy' => 'attribute_second_here',
				'field'    => 'slug',
				'terms'    => 'the condition here',
			],
			[
				'taxonomy' => 'attribute_third_here',
				'field'    => 'slug',
				'terms'    => 'the condition here',
			]
		],
		'meta_query' => array(
			array(
				'key' => 'custom-field-to-filter',  // Replace with the name of your custom field
				'compare' => '!=',                  // Comparison operator (use '=', '!=', '>', '<', etc.)
				'value' => 'N/A',                   // The value you want to filter by
			),
		)
	)
);