WP Woocommerce Sorting by Price Buttons

archive-product.php

<div class="product_filter">

<?php 
	$order = get_query_var('order') ? get_query_var('order') : false;
	$orderby = get_query_var('meta_key') ? get_query_var('meta_key') : false;
	$ord_asc = '';
	$ord_desc = '';
	if(($orderby != false && $orderby == '_price') && $order != false){
		if($order == 'ASC') $ord_asc = 'order_active_link';
		if($order == 'DESC') $ord_desc = 'order_active_link';
	}

 ?>
	 <a class="<?php echo $ord_asc; ?>" href="<?php echo get_category_link() ?>?orderby=price&order=asc"><i class="icon-long-arrow-down" style="display: inline;"></i> Сначала подешевле </a> &nbsp; &nbsp; 
	 <a class="<?php echo $ord_desc; ?>" href="<?php echo get_category_link() ?>?orderby=price&order=desc"><i class="icon-long-arrow-up" style="display: inline;"></i> Сначала подороже</a>
</div>

functions.php

<?php
add_filter('woocommerce_get_catalog_ordering_args', 'am_woocommerce_catalog_orderby');
function am_woocommerce_catalog_orderby( $args ) {

	$order = get_query_var('order') ? get_query_var('order') : 'asc';
	$orderby = get_query_var('orderby') ? get_query_var('orderby') : apply_filters( 'woocommerce_default_catalog_orderby', get_option('woocommerce_default_catalog_orderby') );
    if($orderby != get_option( 'woocommerce_default_catalog_orderby' )){
    	$args['meta_key'] = '_'.$orderby;
	    $args['orderby'] = 'meta_value_num';
	    $args['order'] = $order; 
    }
    
    return $args;
}

style.css

.order_active_link, .order_active_link i{
color: #ffbb00 !important;
}