Fix issue & comment history bugs (#29525)

* Follow #17746: `HasIssueContentHistory` should use expr builder to
make sure zero value (0) be respected.
* Add "doer" check to make sure `canSoftDeleteContentHistory` only be
called by sign-in users.

1 files changed, 2 insertions, 6 deletions

diff --git a/models/issues/content_history.go b/models/issues/content_history.go
index 8b00adda99..31c80d2cea 100644
--- a/models/issues/content_history.go
+++ b/models/issues/content_history.go
@@ -172,13 +172,9 @@ func FetchIssueContentHistoryList(dbCtx context.Context, issueID, commentID int6
 
 // HasIssueContentHistory check if a ContentHistory entry exists
 func HasIssueContentHistory(dbCtx context.Context, issueID, commentID int64) (bool, error) {
-	exists, err := db.GetEngine(dbCtx).Cols("id").Exist(&ContentHistory{
-		IssueID:   issueID,
-		CommentID: commentID,
-	})
+	exists, err := db.GetEngine(dbCtx).Where(builder.Eq{"issue_id": issueID, "comment_id": commentID}).Exist(&ContentHistory{})
 	if err != nil {
-		log.Error("can not fetch issue content history. err=%v", err)
-		return false, err
+		return false, fmt.Errorf("can not check issue content history. err: %w", err)
 	}
 	return exists, err
 }