WooCommerce - List products by attribute (multiple values), ex: [woo_products_by_attributes attribute="colour" values="red,black" per_page="5"]

gistfile1.php

<?php
/**
 * Plugin Name: WooCommerce - List Products by Attributes
 * Plugin URI: http://www.remicorson.com/list-woocommerce-products-by-attributes/
 * Description: List WooCommerce products by attributes using a shortcode, ex: [woo_products_by_attributes attribute="colour" values="red,black" per_page="5"]
 * Version: 1.0
 * Author: Remi Corson
 * Author URI: http://remicorson.com
 * Requires at least: 3.5
 * Tested up to: 3.5
 *
 * Text Domain: -
 * Domain Path: -
 *
 */
 
/*
 * List WooCommerce Products by attributes
 *
 * ex: [woo_products_by_attributes attribute="colour" values="red,black" per_page="5"]
 */
function woo_products_by_attributes_shortcode( $atts, $content = null ) {

  global $woocommerce, $woocommerce_loop;

	// Get attribuets
	extract(shortcode_atts(array(
		'attribute' => '',
		'values'     => '',
		'per_page'  => '12',
		'columns'   => '4',
	  	'orderby'   => 'title',
	  	'order'     => 'desc',
	), $atts));
	
	if ( ! $attribute ) return;
	
	// Default ordering args
	$ordering_args = $woocommerce->query->get_catalog_ordering_args( $orderby, $order );
	
	// Define Query Arguments
	$args = array( 
				'post_type'				=> 'product',
				'post_status' 			=> 'publish',
				'ignore_sticky_posts'	=> 1,
				'orderby' 				=> $ordering_args['orderby'],
				'order' 				=> $ordering_args['order'],
				'posts_per_page' 		=> $per_page,
				'meta_query' 			=> array(
					array(
						'key' 			=> '_visibility',
						'value' 		=> array('catalog', 'visible'),
						'compare' 		=> 'IN'
					)
				),
				'tax_query' 			=> array(
			    	array(
				    	'taxonomy' 		=> 'pa_' . $attribute,
						'terms' 		=> explode(",",$values),
						'field' 		=> 'slug',
						'operator' 		=> 'IN'
					)
			    )
			);
	
	ob_start();
	
	$products = new WP_Query( $args );

	$woocommerce_loop['columns'] = $columns;

	if ( $products->have_posts() ) : ?>

		<?php woocommerce_product_loop_start(); ?>

			<?php while ( $products->have_posts() ) : $products->the_post(); ?>

				<?php woocommerce_get_template_part( 'content', 'product' ); ?>

			<?php endwhile; // end of the loop. ?>

		<?php woocommerce_product_loop_end(); ?>

	<?php endif;

	wp_reset_postdata();

	return '<div class="woocommerce">' . ob_get_clean() . '</div>';
 
}
 
add_shortcode("woo_products_by_attributes", "woo_products_by_attributes_shortcode");

@corsonr, I found this gist and I'm thinking if there is some way to show related products filtering by some tag of that product. Did you already see something like this?

It's awesome. Thanks for code!

Thank you a lot for this brilliant plugin :)