drop ref column for issue

Author: hiifong

models/migrations/migrations.go

@@ -369,6 +369,7 @@ func prepareMigrationTasks() []*migration {
 		newMigration(309, "Improve Notification table indices", v1_23.ImproveNotificationTableIndices),
 		newMigration(310, "Add Priority to ProtectedBranch", v1_23.AddPriorityToProtectedBranch),
 		newMigration(311, "Add TimeEstimate to Issue table", v1_23.AddTimeEstimateColumnToIssueTable),
+		newMigration(312, "Drop ref column for issue table", v1_23.DropRefForIssue),
 	}
 	return preparedMigrations
 }

models/migrations/v1_23/v312.go

@@ -0,0 +1,11 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package v1_23 //nolint
+
+import "xorm.io/xorm"
+
+func DropRefForIssue(x *xorm.Engine) error {
+	_, err := x.Exec("ALTER TABLE `issue` DROP COLUMN `ref`")
+	return err
+}