update_menu.py

new_menus = []

def update_menu_info(menu, project_id, parent_id=None, order, level=0):
    if menu.get('mobile'):
        menu.setting.update({'mobile': menu.pop('mobile')})
        menu.update({
            'project_id': project_id,
            'parent_id': parent_id,
            'order': order,
            'level': level
        })
    # 将更新过的menu对象存进new_menus列表，并且将单个new_menu对象提交到事务
    return project._create_or_update_menu(Menu, menu, with_id=False)
    
for idx, menu in enumerate(menus):
    children = menu.pop('children', [])
    new_menu = update_menu_info(menu, project.id, None, idx, 0)
    new_menus.append(new_menu)
    db.session.add(new_menu)
    db.session.flush()
    
    # 如有child_menu对象，也将其存入new_menus列表
    new_menus += [update_menu_info(menu, project.id, new_menu.id, cidx, 1) if child_menu.get('mobile') for cidx, child_menu in enumerate(children)]