public function taskFormSubmitted(Form $form)
                            {


                              $hash = $this->calculateHash($form->values->password) ;
                                 try
                                   {
                                $this->registrations->registrationUser($form->values->username, $hash, $form->values->name);
                                 } catch(Exception $e)

                                    {

                             //echo 'Chyba: ', $e->getMessage();
                              if ( $e->getCode() == 23000) {
                                          $this->flashMessage('tenhle nick uz je pouzivan.', 'success');
                              }
                              else {
                             ///////////////
                              }
                                        };

                               }