public function actionEdit($id)
 {
     $record = $this->model->get($id);
     $this->title = "Editace skupiny " . $record["name"];
     if ($record) {
         if (!$this->user->isInRole("administrator") && !($record->user_id == $this->user->id)) {
             $this->flashMessage("K editaci skupiny " . $record->name . " nejste oprávněn.", "danger");
             $this->redirect("id", $id);
         } else {
             $this->template->id = $id;
             $form = $this["formEdit"];
             if ($record->user_id) {
                 $form["user_id"]->setItems($this->userModel->activeUsersAsArray(array($record->user_id)));
             }
             $form->setDefaults($record);
         }
     } else {
         $this->flashMessage("Skupina " . $id . " neexistuje.", "danger");
         $this->redirect("default");
     }
 }