public function delete()
 {
     $this->db->trans_start();
     $this->db->where('journeyId', $this->id);
     $affected = $this->db->delete('bookings') + parent::_delete($this->id);
     $this->db->trans_complete();
     return $affected;
 }
 public function delete($id)
 {
     parent::_delete($id);
 }