菜单页限制仅显示2层，避免菜单太多页面太长

NewLife.Cube/Common/EntityTreeController.cs

@@ -80,7 +80,7 @@ public class EntityTreeController<TEntity, TModel> : EntityController<TEntity, T
         {
             var pkey = p[set.Parent].ToInt(-1);
             if (pkey >= 0)
-                return EntityTree<TEntity>.FindAllChildsNoParent(pkey);
+                return EntityTree<TEntity>.FindAllChildsByParent(pkey);
         }
 
         return EntityTree<TEntity>.Root.AllChilds;

NewLife.CubeNC/Areas/Admin/Controllers/MenuController.cs

@@ -1,4 +1,6 @@
 using System.ComponentModel;
+using NewLife.Web;
+using XCode;
 using XCode.Membership;
 
 namespace NewLife.Cube.Areas.Admin.Controllers;
@@ -15,4 +17,29 @@ public class MenuController : EntityTreeController<Menu, MenuModel>
         // 过滤要显示的字段
         ListFields.RemoveField("Remark");
     }
+
+    /// <summary>实体树的数据来自缓存</summary>
+    /// <param name="p"></param>
+    /// <returns></returns>
+    protected override IEnumerable<Menu> Search(Pager p)
+    {
+        // 一页显示全部菜单，取自缓存
+        p.PageSize = 10000;
+
+        var menus = EntityTree<Menu>.Root.AllChilds.Where(e => e.Deepth <= 2).ToList();
+
+        var set = GetSetting();
+        if (set != null && !set.Parent.IsNullOrEmpty())
+        {
+            var pkey = p[set.Parent].ToInt(-1);
+            if (pkey >= 0)
+            {
+                var m = XCode.Membership.Menu.FindByID(pkey);
+                var deepth = ((m?.Deepth - 1) ?? 0) + 2;
+                menus = EntityTree<Menu>.FindAllChildsByParent(pkey).Where(e => e.Deepth <= deepth).ToList();
+            }
+        }
+
+        return menus;
+    }
 }

NewLife.CubeNC/Areas/Admin/Index/IndexController.cs

@@ -269,11 +269,7 @@ public class IndexController : ControllerBaseX
         // 如果顶级只有一层，并且至少有三级目录，则提升一级
         if (menus.Count == 1 && menus[0].Childs.All(m => m.Childs.Count > 0)) { menus = menus[0].Childs; }
 
-        var menuTree = MenuTree.GetMenuTree(pMenuTree =>
+        var menuTree = MenuTree.GetMenuTree(m => fact.GetMySubMenus(m.ID, user, true), list =>
-        {
-            var subMenus = fact.GetMySubMenus(pMenuTree.ID, user, true);
-            return subMenus;
-        }, list =>
         {
 
             var menuList = (from menu in list

NewLife.CubeNC/Areas/Admin/Views/Menu/_ListTree_Data.cshtml

@@ -49,7 +49,7 @@
                     <td class="text-center"><input type="checkbox" name="keys" value="@entity.ID" /></td>
                 }
                 <td class="text-center">@entity.ID</td>
-                <td>@entity.TreeNodeName</td>
+                <td><a href="?parentId=@entity.ID">@entity.TreeNodeName</a></td>
                 <td class="text-center">
                     @if (entity.Icon.StartsWithIgnoreCase("fa-"))
                     {

NewLife.CubeNC/Common/EntityTreeController.cs

@@ -118,7 +118,7 @@ public class EntityTreeController<TEntity, TModel> : EntityController<TEntity, T
         {
             var pkey = p[set.Parent].ToInt(-1);
             if (pkey >= 0)
-                return EntityTree<TEntity>.FindAllChildsNoParent(pkey);
+                return EntityTree<TEntity>.FindAllChildsByParent(pkey);
         }
 
         return EntityTree<TEntity>.Root.AllChilds;

NewLife.CubeNC/ViewModels/MenuTree.cs

@@ -1,84 +1,63 @@
-using System;
+namespace NewLife.Cube.ViewModels;
-using System.Collections.Generic;
 
-namespace NewLife.Cube.ViewModels
+/// <summary>菜单树</summary>
+public class MenuTree
 {
+    /// <summary>编号</summary>
+    public Int32 ID { get; set; }
+
+    /// <summary>名称</summary>
+    public String Name { get; set; }
+
+    /// <summary>显示名</summary>
+    public String DisplayName { get; set; }
+
+    /// <summary>全名</summary>
+    public String FullName { get; set; }
+
+    /// <summary>父级编号</summary>
+    public Int32? ParentID { get; set; }
+
+    /// <summary>链接</summary>
+    public String Url { get; set; }
+
+    /// <summary>图标</summary>
+    public String Icon { get; set; }
+
+    /// <summary>是否可见</summary>
+    public Boolean Visible { get; set; }
+
+    /// <summary>是否新窗口打开</summary>
+    public Boolean NewWindow { get; set; }
+
+    /// <summary>可选权限子项</summary>
+    public Dictionary<Int32, String> Permissions { get; set; }
+
+    /// <summary>子菜单</summary>
+    public IList<MenuTree> Children { get => GetChildren?.Invoke(this) ?? null; set { } }
+
     /// <summary>
-    /// 菜单树
+    /// 获取子菜单的方法
     /// </summary>
-    public class MenuTree
+    private static Func<MenuTree, IList<MenuTree>> GetChildren;
+
+    /// <summary>
+    /// 获取菜单树
+    /// </summary>
+    /// <param name="getChildrenSrc">自定义的获取子菜单需要数据的方法</param>
+    /// <param name="getMenuList">获取菜单列表的方法</param>
+    /// <param name="src">获取菜单列表的初始数据来源</param>
+    /// <returns></returns>
+    public static IList<MenuTree> GetMenuTree<T>(Func<MenuTree, T> getChildrenSrc, Func<T, IList<MenuTree>> getMenuList, T src) where T : class
     {
-        /// <summary>
+        GetChildren = m => getMenuList?.Invoke(getChildrenSrc(m));
-        /// 
-        /// </summary>
-        /// <value></value>
-        public Int32 ID { get; set; }
-        /// <summary>
-        /// 名称
-        /// </summary>
-        /// <value></value>
-        public String Name { get; set; }
-        /// <summary>
-        /// 显示名
-        /// </summary>
-        public String DisplayName { get; set; }
-        /// <summary>全名</summary>
-        public String FullName { get; set; }
-        /// <summary>
-        /// 父级id
-        /// </summary>
-        public Int32? ParentID { get; set; }
-        /// <summary>
-        /// 链接
-        /// </summary>
-        /// <value></value>
-        public String Url { get; set; }
-        /// <summary>
-        /// 图标
-        /// </summary>
-        /// <value></value>
-        public String Icon { get; set; }
-        /// <summary>
-        /// 是否可见
-        /// </summary>
-        /// <value></value>
-        public Boolean Visible { get; set; }
 
-        /// <summary>是否新窗口打开</summary>
+        return getMenuList?.Invoke(src);
-        public Boolean NewWindow { get; set; }
-
-        /// <summary>可选权限子项</summary>
-        public Dictionary<Int32, String> Permissions { get; set; }
-        /// <summary>
-        /// 子菜单
-        /// </summary>
-        /// <value></value>
-        public IList<MenuTree> Children { get => GetChildren?.Invoke(this) ?? null; set { } }
-
-        /// <summary>
-        /// 获取子菜单的方法
-        /// </summary>
-        private static Func<MenuTree, IList<MenuTree>> GetChildren;
-
-        /// <summary>
-        /// 获取菜单树
-        /// </summary>
-        /// <param name="getChildrenSrc">自定义的获取子菜单需要数据的方法</param>
-        /// <param name="getMenuList">获取菜单列表的方法</param>
-        /// <param name="src">获取菜单列表的初始数据来源</param>
-        /// <returns></returns>
-        public static IList<MenuTree> GetMenuTree<T>(Func<MenuTree, T> getChildrenSrc,
-        Func<T, IList<MenuTree>> getMenuList, T src) where T : class
-        {
-            GetChildren = m => getMenuList?.Invoke(getChildrenSrc(m));
-
-            return getMenuList?.Invoke(src);
-        }
-
-        /// <summary>
-        /// 已重载。
-        /// </summary>
-        /// <returns></returns>
-        public override String ToString() => Name;
     }
+
+    /// <summary>
+    /// 已重载。
+    /// </summary>
+    /// <returns></returns>
+    public override String ToString() => Name;
 }