fix 处理next空数组

Src/Dlhis.Basic/Organization/Response/DepartmentTreeResponse.cs

@@ -1,4 +1,5 @@
-using Newtonsoft.Json;
+using Kurisu.AspNetCore.Utils.Extensions;
+using Newtonsoft.Json;
 
 namespace Dlhis.Basic.Organization.Response;
 
@@ -26,7 +27,7 @@ public class DepartmentTreeResponse
     /// 下级部门
     /// </summary>
     [JsonIgnore]
-    public List<DepartmentTreeResponse> _Next { get; set; } = new List<DepartmentTreeResponse>();
+    public List<DepartmentTreeResponse> CurrentNext { get; set; }
 
     /// <summary>
     /// 下级部门
@@ -35,8 +36,12 @@ public class DepartmentTreeResponse
     {
         get
         {
-            _Next.ForEach(x => x.Tenant = Tenant);
-            return _Next;
+            if (CurrentNext.IsPresent())
+            {
+                CurrentNext.ForEach(x => x.Tenant = Tenant);
+            }
+            
+            return CurrentNext;
         }
     }
 }

Src/Dlhis.Basic/Organization/Services/Implements/DepartmentService.cs

@@ -37,7 +37,7 @@ public class DepartmentService : IDepartmentService
             No = x.Code,
             PNo = null,
             Tenant = x.Code,
-            _Next = tops.Select(item =>
+            CurrentNext = tops.Select(item =>
             {
                 var i = item.Adapt<DepartmentTreeResponse>();
                 i.PNo = x.Code;
@@ -48,13 +48,18 @@ public class DepartmentService : IDepartmentService
         .ToList();
     }
 
-    private void RecursionGetNext(DepartmentTreeResponse current, List<DepartmentTreeResponse> data)
+    //***************************************************** help methods ****************************************************************
+
+    private static void RecursionGetNext(DepartmentTreeResponse current, List<DepartmentTreeResponse> data)
     {
         var next = data.Where(x => x.PNo == current.No).ToList();
-        current._Next = next;
+        if (next.Any())
+        {
+            current.CurrentNext = next;
             foreach (var item in next)
             {
                 RecursionGetNext(item, data);
             }
         }
     }
+}