canvas-lms/db/migrate/20190304161148_link_submiss...

34 lines
1.0 KiB
Ruby

# frozen_string_literal: true
#
# Copyright (C) 2019 - present Instructure, Inc.
#
# This file is part of Canvas.
#
# Canvas is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the Free
# Software Foundation, version 3 of the License.
#
# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You should have received a copy of the GNU Affero General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
#
class LinkSubmissionCommentsToSubmissionAttempt < ActiveRecord::Migration[5.1]
tag :predeploy
disable_ddl_transaction!
def up
add_column :submission_comments, :attempt, :integer
add_index :submission_comments, :attempt, algorithm: :concurrently
end
def down
remove_column :submission_comments, :attempt
end
end