菜单树

//菜单树
        public async Task<CommonResponse> GetPermissions()
        {
            var result = new CommonResponse();
            var permissionsList = await _repository.QueryAsync<PermissionEntity>(d => d.Is_Deleted == false);
            var rootNode = new JArray();
            GetPermission(permissionsList, 0, "", rootNode);
            result.SetSuccess(rootNode);
            return result;
        }
        public void GetPermission(List<PermissionEntity> permissions, int index, string pid, JArray root)
        {
            if (index >= permissions.Count)
            {
                return;
            }

            var entity = permissions[index];
            if (!string.IsNullOrEmpty(pid) && pid != "0")   //子菜单
            {
                entity = permissions.Where(d => d.Id == pid).FirstOrDefault();
            }
            else if (index == 0 && entity.Pid != "0")       //首次不是一级菜单
            {
                GetPermission(permissions, ++index, "", root);
                return;
            }

            var node = new JObject();
            node.Add("id", entity.Id);
            node.Add("path", entity.Path);
            node.Add("name", entity.Name);
            node.Add("component", entity.Component);
            if (!string.IsNullOrEmpty(entity.Redirect))
            {
                node.Add("redirect", entity.Redirect);
            }
            var node2 = new JObject();
            node2.Add("title", entity.Title);
            node2.Add("icon", entity.Icon);
            node.Add("meta", node2);
            node.Add("ability", new JArray());
            var childeData = new JArray();
            var childeIDs = permissions.Where(d => d.Pid == entity.Id).Select(d => d.Id).ToList();
            if (childeIDs.Count > 0)
            {
                foreach (var childID in childeIDs)
                {
                    GetPermission(permissions, 0, childID, childeData);
                }
                node.Add("children", childeData);
            }
            root.Add(node);
            var currentIndex = permissions.IndexOf(entity);
            permissions.RemoveAt(currentIndex); //删除已添加节点项

            if (!string.IsNullOrEmpty(pid) && pid != "0" && childeIDs.Count == 0)  //子菜单下没有子菜单了
                return;
            GetPermission(permissions, currentIndex, "", root);
        }