1 files changed, 28 insertions, 0 deletions
diff --git a/lib/gitlab/background_migration/backfill_topics_title.rb b/lib/gitlab/background_migration/backfill_topics_title.rb
new file mode 100644
index 00000000000..19a1eff5b58
--- /dev/null
+++ b/lib/gitlab/background_migration/backfill_topics_title.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module BackgroundMigration
+    # The class to backfill the topic title
+    class BackfillTopicsTitle
+      # Temporary AR model for topics
+      class Topic < ActiveRecord::Base
+        self.table_name = 'topics'
+      end
+
+      def perform(start_id, end_id)
+        Topic.where(id: start_id..end_id).where(title: nil).update_all('title = name')
+
+        mark_job_as_succeeded(start_id, end_id)
+      end
+
+      private
+
+      def mark_job_as_succeeded(*arguments)
+        ::Gitlab::Database::BackgroundMigrationJob.mark_all_as_succeeded(
+          self.class.name.demodulize,
+          arguments
+        )
+      end
+    end
+  end
+end