Get featured products in Woocommerce 3 - php

Question

I want to add Featured products for upsell (or Recent Products OR Best Selling Products) in New order Email template. It works like Upsell with email marketing. How do I add it to woocommerce email template so that there is a section in the end of the email which shows my featured/Recent/best selling products. I tried using this code in my New order Email template but nothing works. I use all latest version of wordpress n woocommerce.
$args = array(
'post_type' => 'product',
'meta_key' => '_featured',
'meta_value' => 'yes',
'posts_per_page' => 1
);
$featured_query = new WP_Query( $args );
if ($featured_query->have_posts()) :
while ($featured_query->have_posts()) :
$featured_query->the_post();
$product = get_product( $featured_query->post->ID );
// Output product information here
endwhile;
endif;
wp_reset_query(); // Remember to reset

Answer 1

Since Woocommerce 3, the products following properties:
"featured",
"stock status",
"catalog visibility"
"rating system"
are now stored like a post term under 'product_visibility' taxonomy, for better performances. So old postmeta data doesn't work anymore.
To make your code working you need instead to make a tax_query this way:
function custom_featured_products(){
$query = new WP_Query( array(
'post_type' => 'product',
'post_status' => 'publish',
'posts_per_page' => -1 ,
'tax_query' => array( array(
'taxonomy' => 'product_visibility',
'field' => 'term_id',
'terms' => 'featured',
'operator' => 'IN',
) )
) );
$featured_product_names = array();
if ( $query->have_posts() ): while ( $query->have_posts() ): $query->the_post();
$product = wc_get_product( $query->post->ID );
$featured_product_names[] = $product->get_title();
endwhile; wp_reset_query();endif;
// Testing output
echo '<p>Featured products: ' . implode(', ', $featured_product_names) . '</p>';
}
// Displaying the featured products names in new order email notification
add_action ('woocommerce_email_customer_details', 'new_order_featured_products_display', 30, 4 );
function new_order_featured_products_display( $order, $sent_to_admin, $plain_text, $email ){
// Only for "New Order" email notification
if( 'new_order' != $email->id ) return;
custom_featured_products(); // calling the featured products function output
}
This code goes on function.php file of your active child theme (or theme).
Tested and works.
Updated related to your comments…
Added the code in a function that is called via a hooked function in "New order" email notification.
To get the product image use: $product->get_image( 'shop_thumbnail' );
To get the product link use : $product->get_permalink();

Answer 2

<ul class="products">
<?php
$args = array(
'post_type' => 'product',
'posts_per_page' => 12,
'tax_query' => array(
array(
'taxonomy' => 'product_visibility',
'field' => 'name',
'terms' => 'featured',
),
),
);
$loop = new WP_Query( $args );
if ( $loop->have_posts() ) {
while ( $loop->have_posts() ) : $loop->the_post();
echo '<p>'.get_the_title().'</p>';
endwhile;
} else {
echo __( 'No products found' );
}
wp_reset_postdata();
?>
</ul><!--/.products-->