/**
  * Formulario para ingresar/editar rol
  * @throws Exception
  */
 public function form()
 {
     $params = $this->input->post(null, true);
     $rol = $this->rol_model->getById($params["id"]);
     if (!is_null($rol)) {
         $data = array("id" => $rol->rol_ia_id, "nombre" => $rol->rol_c_nombre);
     } else {
         $data = array();
     }
     $this->load->view("pages/mantenedor_rol/form", $data);
 }