public function dsLinhVuc() { $bizLinhVuc = new Default_Model_LinhVuc(); $result = array(); $result = $bizLinhVuc->getAll(); $link = new Zend_View_Helper_Url(); $str = '<ul>'; foreach ($result as $linh_vuc) { $url = $link->url(array('controller' => 'de-tai', 'action' => 'danh-sach', 'catid' => $linh_vuc['id']), null, true); $str .= '<li><a class="Normal" href="' . $url . '" target="_self">' . $linh_vuc['ten'] . '</a></li>'; } $str .= '</ul>'; return $str; }