Hide subcategory procucts on the category page in WooCommerce

HowTo Code Snippets
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Hide subcategory procucts on the category page in WooCommerce on child sites.

Snippet Type

Execute on Child Sites

Snippet

add_action( 'woocommerce_product_query', 'wc_hide_products_subcategory', 9999 );
    
function wc_hide_products_subcategory( $q ) {
    
   if ( ! is_product_category() ) return;
    
   $parent_id = get_queried_object_id();
   $subcats = woocommerce_get_product_subcategories( $parent_id );
   if ( empty( $subcats ) ) return;
    
   $tax_query = (array) $q->get( 'tax_query' );
   $tax_query[] = array(
      'taxonomy' => 'product_cat',
      'field' => 'slug',
      'terms' => array_column( $subcats, 'slug' ),
      'operator' => 'NOT IN'
   );
    
   $q->set( 'tax_query', $tax_query, true );
    
}
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