public function getByCountriesCities($country_id = 0, $city_id = 0)
 {
     $where = '1=1';
     if ($country_id != 0) {
         $where = $where . " and `jobs`.`country_id`='{$country_id}' ";
     }
     if ($city_id != 0) {
         $where = $where . " and `jobs`.`city_id`='{$city_id}' ";
     }
     $jobsModel = new jobsModel();
     $search_jobs = $jobsModel->get_by_condition($where);
     $view = new viewModel('job_search');
     $view->assign('search_jobs', $search_jobs);
 }