function wpqv_button()
 {
     global $post;
     $params = array('button_class' => 'wc-quick-view', 'image_class' => 'wc-loading-button-open');
     wpqv_get_template_part('wpqv-button', $params);
 }
 public function show_product()
 {
     $product_id = $_POST['product_id'];
     $next_id = isset($_POST['next_product_id']) ? $_POST['next_product_id'] : NULL;
     $prev_id = isset($_POST['prev_product_id']) ? $_POST['prev_product_id'] : NULL;
     if ($product_id) {
         /*get product according to product_id*/
         $query_args = array('post_type' => 'product', 'post__in' => array($product_id), 'post_status' => 'publish');
         $wp_query = new WP_Query($query_args);
         $response = NULL;
         if ($wp_query->have_posts()) {
             ob_start();
             while ($wp_query->have_posts()) {
                 $wp_query->the_post();
                 $params = array('next_id' => $next_id, 'prev_id' => $prev_id, 'next_class' => 'quick-view-nav next', 'prev_class' => 'quick-view-nav prev');
                 wpqv_get_template_part('wpqv-product', $params);
             }
             $response = ob_get_contents();
         }
         ob_end_clean();
         /*reset post query*/
         wp_reset_query();
         echo json_encode($response);
         die;
     }
 }