/** 
  * [paginationAction description]
  * @return [type] [description]
  * this is using ajax but it not good for seo
  */
 public function paginationAction()
 {
     header('Content-Type: application/json');
     //goi ham phan trang trong maintroller
     $t = $this->getPostData();
     $page = $t['id'];
     //$html = $this->pagination($page);
     // ================================== goi ham phan trang =======
     $totalpage = "";
     //tinh xem minh co khoan bao nhieu page
     $per_page = 3;
     //tong so item tren mot trang
     $record = count(Product::getAll());
     //tong so hang cua csdl
     if ($record > $per_page) {
         $totalpage = ceil($record / $per_page);
     } else {
         $totalpage = 1;
     }
     $start = ($page - 1) * $per_page;
     //tinh so dong bat dau trong co so du lieu tu page nhap vao
     $end_page = $totalpage - 1;
     $productpage = Product::getPaginate($start, $per_page);
     //var_dump($productpage);
     //hien thi data
     $data = "";
     foreach ($productpage as $p) {
         $data .= '<li>';
         $data .= '<div class="product-item">';
         $data .= '<div class="img-feature">';
         $data .= '<img src=' . $p["feature_img"] . ' width="200" height="250" alt="">';
         $data .= '</div>';
         $data .= '<div class="desc">';
         $data .= "<p>Name:" . $p['name'] . "</p>";
         $data .= "<p>Giá:" . $p['price'] . "</p>";
         $data .= "<p>Tình trạng:" . $p['qty'] . "</p>";
         $data .= "</div>";
         $data .= "<span class='BTN'> <a href='#' onclick='addcart(" . $p['id'] . ")'> AddToCart</a></span>";
         $data .= "<br> ";
         $data .= "<span class='BTN'> <a href='../detailpage/" . $p['id'] . "'> Chi tiet</a></span>";
         $data .= "</div></li>";
     }
     //hien thi link page: 2 3 4....
     $html = "";
     for ($i = 1; $i <= $totalpage; $i++) {
         if ($page == $i) {
             $html .= "<li class='current'><a href='#' onclick='demo({$i})'> {$i} </a></li>";
         } else {
             $html .= "<li ><a href='#' onclick='demo({$i})'> {$i} </a></li>";
         }
     }
     // ===================================================
     return json_encode(array('html' => $html, 'data' => $data));
 }
 public function pagination($page)
 {
     $totalpage = "";
     //tinh xem minh co khoan bao nhieu page
     $per_page = 3;
     //tong so item tren mot trang
     $record = count(Product::getAll());
     //tong so hang cua csdl
     if ($record > $per_page) {
         $totalpage = ceil($record / $per_page);
     } else {
         $totalpage = 1;
     }
     $start = ($page - 1) * $per_page;
     //tinh so dong bat dau trong co so du lieu tu page nhap vao
     $end_page = $totalpage - 1;
     $productpage = Product::getPaginate($start, $per_page);
     // $current = ($start/$per_page) + 1;
     // $next = $start + $per_page;
     // $previous = $start - $per_page;
     // $last = ($page - 1)*$per_page;
     // if($current >4){
     // 	$start_page = $current -2;
     // 	if($page > $current+2)  $end_page = $current + 2;
     // }
     //hien thi first , previous
     // if($current > 1){
     // 	$html .= "<li><a> First </a></li>";
     // 	$html .= "<li><a> Previous </a></li>";
     // }
     //hien thi link page: 2 3 4....
     $html = "";
     for ($i = 1; $i <= $end_page; $i++) {
         if ($page == $i) {
             $html .= "<li class='current'><a href='#' onclick='demo({$i})'> {$i} </a></li>";
         } else {
             $html .= "<li ><a href='#' onclick='demo({$i})'> {$i} </a></li>";
         }
     }
     //hien thi last page va next
     // if($current < $page){
     // 	$html .= "<li><a> Next </a></li>";
     // 	$html .= "<li><a> Last </a></li>";
     // }
     return $html;
 }