Online Shop Wordpress theme by ACME Themes: Category does not work while searching for products.

cat_search.txt

Add following function to your theme's function.php and category will be counted while searching for products.

/**
 * Adds Category taxonomy query to WP search query
 * This addition will make the search more relevant
 * @param type $query
 */
function search_filter($query) {
  if($query->is_search()) {
    // category terms search.
    if (isset($_GET['product_category']) && !empty($_GET['product_category'])) {
 $tax_query = array(
        'taxonomy' => 'product_cat',
        'terms'    => array($_GET['product_category']),
        'field'    => 'id',
        'operator' => 'IN',
    );
    $query->tax_query->queries[] = $tax_query; 
    $query->query_vars['tax_query'] = $query->tax_query->queries;
    }
}
}

add_action('pre_get_posts','search_filter');