From 0e0aed22f13149042b9bdeb696e5f6964af3bce3 Mon Sep 17 00:00:00 2001
From: mayue <mayue@easycorp.ltd>
Date: Thu, 19 May 2022 03:26:18 +0000
Subject: [PATCH] * Fix bug #22639.

---
 module/productplan/model.php | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/module/productplan/model.php b/module/productplan/model.php
index daa6fbce6f..e7ddf6f878 100644
--- a/module/productplan/model.php
+++ b/module/productplan/model.php
@@ -497,6 +497,7 @@ class productplanModel extends model
         $plan = fixer::input('post')->stripTags($this->config->productplan->editor->edit['id'], $this->config->allowedTags)
             ->setIF($this->post->future or empty($_POST['begin']), 'begin', $this->config->productplan->future)
             ->setIF($this->post->future or empty($_POST['end']), 'end', $this->config->productplan->future)
+            ->setIF(!isset($_POST['parent']), 'parent', -1)
             ->add('id', $planID)
             ->remove('delta,uid,future')
             ->get();
@@ -515,9 +516,9 @@ class productplanModel extends model
                 if($plan->end !== $this->config->productplan->future and $plan->end > $parentPlan->end) dao::$errors['end'] = sprintf($this->lang->productplan->endGreaterParent, $parentPlan->end);
             }
         }
-        elseif($parentPlan and $plan->begin != $this->config->productplan->future)
+        elseif($plan->parent == -1 and $plan->begin != $this->config->productplan->future)
         {
-            $childPlans = $this->getChildren($parentPlan->id);
+            $childPlans = $this->getChildren($oldPlan->id);
             $minBegin   = $plan->begin;
             $maxEnd     = $plan->end;
             foreach($childPlans as $childID => $childPlan)