permissions = models.Permission.objects.all().values("pk", "title", "name", "url", "menu_id", "pid_id")permission_dict = OrderedDict()permission_name_set = set()for row in permissions:permission_dict[row.get("name")] = rowpermission_name_set.add(row.get("name"))

permission_name_set：{'role_edit', 'customer_edit', 'payment_add', 'payment_list', 'payment_del', 'second_menu_del', 'role_list', 'menu_list', 'menu_del', 'customer_del', 'user_list', 'customer_import', 'user_add', 'user_del', 'permission_edit', 'permission_add', 'customer_tpl', 'reset_pwd', 'second_menu_add', 'menu_add', 'customer_list', 'menu_edit', 'user_edit', 'payment_edit', 'second_menu_edit', 'permission_del', 'customer_add', 'role_add', 'role_del'}

all_url_dict = get_all_url_dict()
router_name_set = set(all_url_dict.keys())

router_name_set：{'role_edit', 'customer_edit', 'payment_add', 'multi_permissions', 'payment_list', 'payment_del', 'second_menu_del', 'role_list','menu_list', 'menu_del', 'customer_del', 'user_list', 'customer_import', 'user_add', 'user_del', 'permission_edit', 'permission_add', 'customer_tpl', 'reset_pwd', 'second_menu_add', 'menu_add', 'customer_list', 'menu_edit', 'user_edit', 'payment_edit', 'second_menu_edit', 'permission_del', 'customer_add', 'role_add', 'role_del'}

    # 3.1 计算出应该添加的name 并生成 formset (自动发现有的，数据库没有的。所以要循环的是 自动发现查询出的字典)generate_name_list = router_name_set - permission_name_set  # 增加列表generate_formset_class = formset_factory(MultiAddPermissionForm, extra=0)generate_formset = generate_formset_class(initial=[row_dict for name, row_dict in all_url_dict.items() if name in generate_name_list])

(数据库有的，自动发现 没有的。所以要循环的是 数据库查询出的字典) delete_name_list = permission_name_set - router_name_set  # 删除列表#  页面展示时 不需要删除的formset 只提供一个删除按钮就好delete_row_list = [row_dict for name, row_dict in permission_dict.items() if name in delete_name_list]

    for name, value in permission_dict.items():router_row = all_url_dict.get(name)  # 从all_url_dict取出key为 name 的值if not router_row:  # 如果没有找到，直接跳过。continueif value.get("url") != router_row.get("url"):  # 找到的情况下， 比对 两个的 url 是否一直value["url"] = "路由和数据库中不一致，请检查。并填写正确的  url！！"# 3.3 计算出应该更新的name (数据库有的，自动发现有的。所以要循环的是 数据库查询出的字典)update_name_list = permission_name_set & router_name_set  # 更新列表update_formset_class = formset_factory(MultiEditPermissionForm, extra=0)update_formset = update_formset_class(initial=[row_dict for name, row_dict in permission_dict.items() if name in update_name_list])

<form method="post" action="?type=generate">......
</form><form method="post" action="?type=update">......
</form>

def multi_permissions(request):'''批量操作权限:param request::return:'''post_type = request.GET.get("type")generate_formset = Noneupdate_formset = Noneupdate_formset_class = formset_factory(MultiEditPermissionForm, extra=0)generate_formset_class = formset_factory(MultiAddPermissionForm, extra=0)if request.method == "POST" and post_type == "generate":  # 批量添加formset = generate_formset_class(data=request.POST)if formset.is_valid():has_error = False  #  判定是否有发生错误object_list = []  # 添加时 将每一个model对象 添加到  object_list  列表中post_row_list = formset.cleaned_datafor i in range(0, formset.total_form_count()):row_dict = post_row_list[i]  # 根据索引拿到 每一行用户上传的数据(得到的是一个字典)if not row_dict:continuetry:new_object = models.Permission(**row_dict)  # 将字典交给Permission模型。得到model对象new_object.validate_unique()  # 判断与数据库中  有限制unique的字段，是否重复。  如果有抛出异常object_list.append(new_object)  # 无异常的 添加到列表中except Exception as e:formset.errors[i].update(e)  #  捕获错误， 并将错误信息，添加到当前form对象的error字典中。generate_formset = formset  # 将接收用户数据之后的 formset 重新赋值给generate_formset （前端才能显示错误信息）has_error = True  # 发生过错误，更改状态if not has_error:  # 如果发生了错误，就不进行更新保存的操作models.Permission.objects.bulk_create(object_list, batch_size=100)  # 批量添加else:generate_formset = formset
# 更新 与 添加的，没有明显不同。if request.method == "POST" and post_type == "update":  # 批量更新formset = update_formset_class(data=request.POST)if formset.is_valid():post_row_list = formset.cleaned_datafor i in range(0, formset.total_form_count()):row_dict = post_row_list[i]permission_id = row_dict.pop("id")try:row_object = models.Permission.objects.filter(pk=permission_id).first()for k, v in row_dict.items():setattr(row_object, k, v)  # model对象也是一个 类 实例化来的。 所以使用反射 进行赋值操作row_object.validate_unique()row_object.save()  # 更新只能是，一条一条的 逐条更新。 无法批量except Exception as e:formset.errors[i].update(e)update_formset = formsetelse:update_formset = formset# 1.获取项目中，所有的URLall_url_dict = get_all_url_dict()router_name_set = set(all_url_dict.keys())# 2. 获取数据库中所有的urlpermissions = models.Permission.objects.all().values("id", "title", "name", "url", "menu_id", "pid_id")permission_dict = OrderedDict()permission_name_set = set()for row in permissions:permission_dict[row.get("name")] = rowpermission_name_set.add(row.get("name"))# permission_name_set = set(permission_dict.keys())# 以下循环主要是为了，进行更新操作的时候。有可能自动发现和数据库中 name 一样而url不一样时。强制更改一下# 让用户去自己去检查一下。 到底要使用 那个url。 需要用户自己手动填写for name, value in permission_dict.items():router_row = all_url_dict.get(name)if not router_row:continueif value.get("url") != router_row.get("url"):value["url"] = "路由和数据库中不一致，请检查。并填写正确的  url！！"# 3. 应该要 添加，删除，修改的权限有哪些# 3.1 计算出应该添加的name 并生成 formset (自动发现有的，数据库没有的。所以要循环的是 自动发现查询出的字典)if not generate_formset:generate_name_list = router_name_set - permission_name_set  # 增加列表generate_formset = generate_formset_class(initial=[row_dict for name, row_dict in all_url_dict.items() if name in generate_name_list])# 3.2 计算出，应该删除的name，(数据库有的，自动发现 没有的。所以要循环的是 数据库查询出的字典)delete_name_list = permission_name_set - router_name_set  # 删除列表#  页面展示时 不需要删除的formset 只提供一个删除按钮就好delete_row_list = [row_dict for name, row_dict in permission_dict.items() if name in delete_name_list]# 3.3 计算出应该更新的name (数据库有的，自动发现有的。所以要循环的是 数据库查询出的字典)if not update_formset:update_name_list = permission_name_set & router_name_set  # 更新列表update_formset = update_formset_class(initial=[row_dict for name, row_dict in permission_dict.items() if name in update_name_list])return render(request, "rbac/multi_permission.html",{"generate_formset": generate_formset,"delete_row_list": delete_row_list,"update_formset": update_formset},)def multi_permissions_del(request, pk):'''删除操作， 需要给与用户提示。:param reuqest::param pk:  要删除的权限id:return:'''origin_url = memory_reverse(request, "rbac:multi_permissions")permission_queryset = models.Permission.objects.filter(pk=pk)if not permission_queryset:return HttpResponse("菜单不存在")if request.method == "POST":permission_queryset.delete()return redirect(origin_url)return render(request, "rbac/delete.html", {"cancel": origin_url})