Code-Snippets-Functions/Execute a function on a child site/WooCommerce/hide-variable-products-variations-if-out-of-stock.txt

add_action( 'woocommerce_product_query', 'hide_variable_products_with_all_outofstock_variations', 10, 2 );
function hide_variable_products_with_all_outofstock_variations( $q, $query ) {
    // Get any existing meta query
    $meta_query = $q->get( 'meta_query');

    // Define an additional meta query
    $meta_query['relation'] = 'OR';
    $meta_query[] = array(
        'key'     => '_all_variations_outofstock',
        'value'   => '1',
        'compare' => '!=',
    );
    $meta_query[] = array(
        'key'     => '_all_variations_outofstock',
        'compare' => 'NOT EXISTS',
    );

    // Set the new merged meta query
    $q->set( 'meta_query', $meta_query );
}

// Hide "Out of stock" variable product single pages
add_action( 'template_redirect', 'hide_out_of_stock_variable_product_single_pages' );
function hide_out_of_stock_variable_product_single_pages(){
    if( get_post_meta( get_the_id(), '_all_variations_outofstock', true ) ) {
        // Redirect to Shop page
        wp_redirect( wc_get_page_permalink( 'shop' ) );
        exit();
    }
}