def transfer_menu_items_from_db(self):
        r = self.connect()

        dbconnector = DatabaseUtil().connect()
        mc = dbconnector['menu_items']

        menu_items = mc.find({}, {'_id': 0})
        menu_items2 = mc.find({}, {'_id': 0})

        for menu_item in menu_items:
            print('Родитель: ', menu_item['menu_id'])
            print('Его дети:')
            childs = [i['menu_id'] for i in menu_items2 if i['parent_id'] == menu_item['menu_id']]
            print(childs)