display product from same categories related products woocommerce

1/**
2 * @snippet       Get Related Products by Same Sub Category with no Repeate Same Product @ WooCommerce Single
3 * @how-to        Get CustomizeWoo.com FREE
4 * @author        Rodolfo Melogli
5 * @compatible    WooCommerce 3.8
6 * @donate $9     https://businessbloomer.com/bloomer-armada/
7 */
8 
9add_filter('woocommerce_related_products', 'add_related_products');
10function add_related_products($related_product_ids)
11{
12    global $post;
13
14// get the cats this product is in
15    $terms = get_the_terms($post->ID, 'product_cat');
16 
17// if there is only one category jump out.
18    if (count($terms) === 1) {
19    return $args;
20    }
21 
22$cats = array();
23// remove anything that is a parent cat
24    foreach ($terms as $k => $term) {
25    if ($term->parent === 0) {
26    unset($terms[$k]);
27    } else {
28    // build list of terms we do want (children)
29    $cats[] = $term->term_id;
30    }
31    }
32 
33    $post_ids = get_posts(array(
34    'post_type' => 'product',
35    'numberposts' => -1, // get all posts.
36    'exclude' => $post->ID,
37    'tax_query' => array(
38    array(
39    'taxonomy' => 'product_cat',
40    'field' => 'term_id',
41    'terms' => $cats,
42    ),
43// Remove current product
44    array(
45    'taxonomy' => 'product_cat',
46    'field' => 'term_id',
47    'terms' => $post->ID,
48    'operator' => 'NOT IN',
49    ),
50    ),
51    'fields' => 'ids', // Only get post IDs
52    ));
53
54    return $post_ids;
55}
56

1<?php
2/**
3 * Related Products
4 *
5 * This template can be overridden by copying it to yourtheme/woocommerce/single-product/related.php.
6 *
7 * HOWEVER, on occasion WooCommerce will need to update template files and you
8 * (the theme developer) will need to copy the new files to your theme to
9 * maintain compatibility. We try to do this as little as possible, but it does
10 * happen. When this occurs the version of the template file will be bumped and
11 * the readme will list any important changes.
12 *
13 * @see         https://docs.woocommerce.com/document/template-structure/
14 * @author      WooThemes
15 * @package     WooCommerce/Templates
16 * @version     3.9.0
17 */
18
19if ( ! defined( 'ABSPATH' ) ) {
20  exit;
21}
22
23global $product, $woocommerce_loop;
24
25if ( empty( $product ) || ! $product->exists() ) {
26  return;
27}
28
29if ( ! $related = $product->get_related( $posts_per_page ) ) {
30  return;
31}
32
33// Get ID of current product, to exclude it from the related products query
34$current_product_id = $product->get_id();
35
36$cats_array = array(0);
37
38// get categories
39$terms = wp_get_post_terms( $product->id, 'product_cat' );
40
41// select only the category which doesn't have any children
42foreach ( $terms as $term ) {
43  $children = get_term_children( $term->term_id, 'product_cat' );
44  if ( !sizeof( $children ) )
45  $cats_array[] = $term->term_id;
46}
47
48$args = apply_filters( 'woocommerce_related_products_args', array(
49  'post_type' => 'product',
50  'post__not_in' => array( $current_product_id ),   // exclude current product
51  'ignore_sticky_posts' => 1,
52  'no_found_rows' => 1,
53  'posts_per_page' => $posts_per_page,
54  'orderby' => $orderby,
55  'tax_query' => array(
56    array(
57        'taxonomy' => 'product_cat',
58        'field' => 'id',
59        'terms' => $cats_array
60    ),
61  )
62));
63
64$products                    = new WP_Query( $args );
65$woocommerce_loop['name']    = 'related';
66$woocommerce_loop['columns'] = apply_filters( 'woocommerce_related_products_columns', $columns );
67
68if ( $products->have_posts() ) : ?>
69
70  <section class="related products">
71
72    <?php
73    $heading = apply_filters( 'woocommerce_product_related_products_heading', __( 'Related products', 'woocommerce' ) );
74
75    if ( $heading ) :
76    ?>
77      <h2><?php echo esc_html( $heading ); ?></h2>
78    <?php endif; ?>
79
80    <?php woocommerce_product_loop_start(); ?>
81
82      <?php while ( $products->have_posts() ) : $products->the_post(); ?>
83
84        <?php wc_get_template_part( 'content', 'product' ); ?>
85
86      <?php endwhile; // end of the loop. ?>
87
88    <?php woocommerce_product_loop_end(); ?>
89
90  </section>
91
92<?php endif;
93
94wp_reset_postdata();