public function index()
 {
     // Cache::loadPage(30);
     $inputData = array('alert' => '');
     Model::loadWithPath('contactus', System::getThemePath() . 'model/');
     if (Request::has('btnSend')) {
         try {
             contactProcess();
             $inputData['alert'] = '<div class="alert alert-success">Send contact success.</div>';
         } catch (Exception $e) {
             $inputData['alert'] = '<div class="alert alert-warning">' . $e->getMessage() . '</div>';
         }
     }
     System::setTitle('Contact us');
     self::makeContent('contactus', $inputData);
     // Cache::savePage();
 }
<?php

$pageName = 'contactus';
$pageData = array();
$headData = GlobalCMS::$setting;
$pageData['content_top'] = Render::content_top($pageName);
$pageData['content_left'] = Render::content_left($pageName);
$pageData['content_right'] = Render::content_right($pageName);
$pageData['content_bottom'] = Render::content_bottom($pageName);
Theme::model('contactus');
// print_r(GlobalCMS::$setting);die();
$pageData['alert'] = '';
if (Request::has('btnSend')) {
    $pageData['alert'] = contactProcess();
}
Theme::view('head', $headData);
Theme::view($pageName, $pageData);
Theme::view('footer');