public function preProcess()
{
$this->productSort();
$nbProducts = 0;
$this->n = (int) Configuration::get('PS_PRODUCTS_PER_PAGE');
$this->p = abs((int) Tools::getValue('p', 1));
try {
$products = SolrSearch::getExpressShippingProducts($nbProducts, $this->p, $this->n);
$this->pagination($nbProducts);
self::$smarty->assign('nbProducts', (int) $nbProducts);
} catch (Exception $e) {
self::$smarty->assign('fetch_error', 1);
}
$this->pageProducts = $products;
}