1 files changed, 21 insertions, 0 deletions
diff --git a/lib/gitlab/background_migration/redact_links/redactable.rb b/lib/gitlab/background_migration/redact_links/redactable.rb
new file mode 100644
index 00000000000..baab34221f1
--- /dev/null
+++ b/lib/gitlab/background_migration/redact_links/redactable.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+# rubocop:disable Style/Documentation
+
+module Gitlab
+  module BackgroundMigration
+    class RedactLinks
+      module Redactable
+        extend ActiveSupport::Concern
+
+        def redact_field!(field)
+          self[field].gsub!(%r{/sent_notifications/\h{32}/unsubscribe}, '/sent_notifications/REDACTED/unsubscribe')
+
+          if self.changed?
+            self.update_columns(field => self[field],
+                                "#{field}_html" => nil)
+          end
+        end
+      end
+    end
+  end
+end