Выводит товары из указанной рубрики без подгрузки товаров из подрубрик

product_category_wo_child.php

<?php
/*
Plugin Name: Product Category Without Child
Description: Выводит товары из указанной рубрики без подгрузки товаров из подрубрик
Version: 1.0.0
Author: Campusboy
Author URI: https://wp-plus.ru/
*/

if ( ! defined( 'ABSPATH' ) ) {
    exit;
} // Exit if accessed directly

// При загрузке woocommerce движком, запускаем наш код
add_action( 'woocommerce_loaded', 'init_My_WC_Shortcodes' );

// Функция создания класса по формированию нового шоткода
function init_My_WC_Shortcodes(){
  
  class My_WC_Shortcodes extends WC_Shortcodes{
        
         
        public function __construct() {
         
          add_shortcode( 'product_category_wo_child', array( 'My_WC_Shortcodes', 'product_category_wo_child' ) );
          
        }
        
        public static function product_category_wo_child( $atts ) {
          $atts = shortcode_atts( array(
            'per_page' => '12',
            'columns'  => '4',
            'orderby'  => 'menu_order title',
            'order'    => 'asc',
            'category' => '',  // Slugs
            'operator' => 'IN' // Possible values are 'IN', 'NOT IN', 'AND'.
          ), $atts, 'product_category' );

          if ( ! $atts['category'] ) {
            return '';
          }

          // Default ordering args
          $ordering_args = WC()->query->get_catalog_ordering_args( $atts['orderby'], $atts['order'] );
          $meta_query    = WC()->query->get_meta_query();
          $query_args    = array(
            'post_type'           => 'product',
            'post_status'         => 'publish',
            'ignore_sticky_posts' => 1,
            'orderby'             => $ordering_args['orderby'],
            'order'               => $ordering_args['order'],
            'posts_per_page'      => $atts['per_page'],
            'meta_query'          => $meta_query
          );

          $query_args = self::_maybe_add_category_args( $query_args, $atts['category'], $atts['operator'] );

          if ( isset( $ordering_args['meta_key'] ) ) {
            $query_args['meta_key'] = $ordering_args['meta_key'];
          }

          $return = self::product_loop( $query_args, $atts, 'product_cat' );

          // Remove ordering query arguments
          WC()->query->remove_ordering_args();

          return $return;
        }
        
        /**
         * Adds a tax_query index to the query to filter by category.
         *
         * @param array $args
         * @param string $category
         * @param string $operator
         * @return array;
         * @access private
         */
        private static function _maybe_add_category_args( $args, $category, $operator ) {
          if ( ! empty( $category ) ) {
            $args['tax_query'] = array(
              array(
                'taxonomy' => 'product_cat',
                'terms'    => array_map( 'sanitize_title', explode( ',', $category ) ),
                'field'    => 'slug',
                'include_children'    => false,
                'operator' => $operator
              )
            );
          }

          return $args;
        }
        
        /**
         * Loop over found products.
         * @param  array $query_args
         * @param  array $atts
         * @param  string $loop_name
         * @return string
         */
        private static function product_loop( $query_args, $atts, $loop_name ) {
          global $woocommerce_loop;

          $products                    = new WP_Query( apply_filters( 'woocommerce_shortcode_products_query', $query_args, $atts, $loop_name ) );
          $columns                     = absint( $atts['columns'] );
          $woocommerce_loop['columns'] = $columns;
          $woocommerce_loop['name']    = $loop_name;

          ob_start();

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

            <?php do_action( "woocommerce_shortcode_before_{$loop_name}_loop" ); ?>

            <?php woocommerce_product_loop_start(); ?>

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

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

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

            <?php woocommerce_product_loop_end(); ?>

            <?php do_action( "woocommerce_shortcode_after_{$loop_name}_loop" ); ?>

            <?php
          } else {
            do_action( "woocommerce_shortcode_{$loop_name}_loop_no_results" );
          }

          woocommerce_reset_loop();
          wp_reset_postdata();

          return '<div class="woocommerce columns-' . $columns . '">' . ob_get_clean() . '</div>';
        }
        
   }
   
   new My_WC_Shortcodes();
}