From ed8a8af99f125cebc8291e510d61511f8e56b04f Mon Sep 17 00:00:00 2001
From: sebastian-sauer <sauer.sebastian@gmail.com>
Date: Fri, 30 Jun 2023 18:08:18 +0200
Subject: [PATCH] Use AfterCommitId to get commit for Viewed functionality
 (#25529)

the PullHeadCommitID is not always available when the PR is merged.

Not sure if this is the best solution but in my simple tests it looks
like this fixes the problem - happy to get any feedback.

hopefully fixes https://github.com/go-gitea/gitea/issues/24813
---
 templates/repo/diff/box.tmpl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/templates/repo/diff/box.tmpl b/templates/repo/diff/box.tmpl
index 1198452f7..8f570e5ef 100644
--- a/templates/repo/diff/box.tmpl
+++ b/templates/repo/diff/box.tmpl
@@ -147,7 +147,7 @@
 										{{end}}
 									{{end}}
 									{{if $isReviewFile}}
-										<label data-link="{{$.Issue.Link}}/viewed-files" data-headcommit="{{$.PullHeadCommitID}}" class="viewed-file-form unselectable{{if $file.IsViewed}} viewed-file-checked-form{{end}}">
+										<label data-link="{{$.Issue.Link}}/viewed-files" data-headcommit="{{$.AfterCommitID}}" class="viewed-file-form unselectable{{if $file.IsViewed}} viewed-file-checked-form{{end}}">
 											<input type="checkbox" name="{{$file.GetDiffFileName}}" autocomplete="off"{{if $file.IsViewed}} checked{{end}}> {{$.locale.Tr "repo.pulls.has_viewed_file"}}
 										</label>
 									{{end}}