72 lines
2.3 KiB
C#
72 lines
2.3 KiB
C#
using Infrastructure.Attribute;
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using System.Collections.Generic;
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using System.Linq;
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using ZR.Model.System;
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using ZR.Service.System.IService;
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namespace ZR.Service.System
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{
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/// <summary>
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/// 文章目录
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/// </summary>
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[AppService(ServiceType = typeof(IArticleCategoryService), ServiceLifetime = LifeTime.Transient)]
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public class ArticleCategoryService : IArticleCategoryService
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{
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/// <summary>
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/// 构建前端所需要树结构
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/// </summary>
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/// <param name="categories">目录列表</param>
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/// <returns></returns>
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public List<ArticleCategory> BuildCategoryTree(List<ArticleCategory> categories)
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{
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List<ArticleCategory> returnList = new List<ArticleCategory>();
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List<int> tempList = categories.Select(f => f.Category_Id).ToList();
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foreach (var dept in categories)
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{
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// 如果是顶级节点, 遍历该父节点的所有子节点
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if (!tempList.Contains(dept.ParentId))
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{
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RecursionFn(categories, dept);
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returnList.Add(dept);
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}
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}
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if (!returnList.Any())
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{
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returnList = categories;
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}
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return returnList;
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}
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/// <summary>
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/// 递归列表
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/// </summary>
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/// <param name="list"></param>
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/// <param name="t"></param>
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private void RecursionFn(List<ArticleCategory> list, ArticleCategory t)
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{
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//得到子节点列表
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List<ArticleCategory> childList = GetChildList(list, t);
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t.Children = childList;
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foreach (var item in childList)
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{
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if (GetChildList(list, item).Count() > 0)
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{
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RecursionFn(list, item);
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}
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}
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}
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/// <summary>
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/// 递归获取子菜单
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/// </summary>
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/// <param name="list">所有菜单</param>
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/// <param name="dept"></param>
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/// <returns></returns>
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private List<ArticleCategory> GetChildList(List<ArticleCategory> list, ArticleCategory t)
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{
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return list.Where(p => p.ParentId == t.Category_Id).ToList();
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}
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}
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}
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