1 files changed, 43 insertions, 0 deletions
diff --git a/db/post_migrate/20170518200835_rename_users_with_renamed_namespace.rb b/db/post_migrate/20170518200835_rename_users_with_renamed_namespace.rb
new file mode 100644
index 00000000000..a0444f4cc62
--- /dev/null
+++ b/db/post_migrate/20170518200835_rename_users_with_renamed_namespace.rb
@@ -0,0 +1,43 @@
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class RenameUsersWithRenamedNamespace < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  DISALLOWED_ROOT_PATHS = %w[
+    -
+    abuse_reports
+    api
+    autocomplete
+    explore
+    health_check
+    import
+    invites
+    jwt
+    koding
+    member
+    notification_settings
+    oauth
+    sent_notifications
+    unicorn_test
+    uploads
+    users
+  ]
+
+  def up
+    namespace_table = Arel::Table.new('namespaces')
+    users_table = Arel::Table.new('users')
+    matching_path = namespace_table.project(namespace_table[:path])
+                      .join(users_table).on(users_table[:id].eq(namespace_table[:owner_id]))
+                      .where(users_table[:username].not_eq(namespace_table[:path]))
+    path_name = Arel::Nodes::SqlLiteral.new("matching_path.path FROM (#{matching_path.to_sql}) as matching_path")
+
+    update_column_in_batches(:users, :username, path_name) do |table, query|
+      query.where(table[:username].matches_any(DISALLOWED_ROOT_PATHS))
+    end
+  end
+
+  def down
+  end
+end