From d823465d94b3b43945eace060000db9334eca52d Mon Sep 17 00:00:00 2001
From: KN4CK3R <admin@oldschoolhack.me>
Date: Wed, 14 Feb 2024 18:51:51 +0100
Subject: [PATCH] Use ghost user if user was not found (#29161) (#29169)

Backport #29161
---
 models/issues/comment_list.go | 4 ++++
 models/issues/review.go       | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/models/issues/comment_list.go b/models/issues/comment_list.go
index cb7df3270d..30a437ea50 100644
--- a/models/issues/comment_list.go
+++ b/models/issues/comment_list.go
@@ -225,6 +225,10 @@ func (comments CommentList) loadAssignees(ctx context.Context) error {
 
 	for _, comment := range comments {
 		comment.Assignee = assignees[comment.AssigneeID]
+		if comment.Assignee == nil {
+			comment.AssigneeID = user_model.GhostUserID
+			comment.Assignee = user_model.NewGhostUser()
+		}
 	}
 	return nil
 }
diff --git a/models/issues/review.go b/models/issues/review.go
index 5bfb8b9dd2..3fca30d7b6 100644
--- a/models/issues/review.go
+++ b/models/issues/review.go
@@ -159,6 +159,14 @@ func (r *Review) LoadReviewer(ctx context.Context) (err error) {
 		return err
 	}
 	r.Reviewer, err = user_model.GetPossibleUserByID(ctx, r.ReviewerID)
+	if err != nil {
+		if !user_model.IsErrUserNotExist(err) {
+			return fmt.Errorf("GetPossibleUserByID [%d]: %w", r.ReviewerID, err)
+		}
+		r.ReviewerID = user_model.GhostUserID
+		r.Reviewer = user_model.NewGhostUser()
+		return nil
+	}
 	return err
 }