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Filename : 20240205215654_remove_lti_resource_link_unique_lti_11_id_constraint.rb

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# frozen_string_literal: true

#
# Copyright (C) 2024 - 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 RemoveLtiResourceLinkUniqueLti11IdConstraint < ActiveRecord::Migration[7.0]
  tag :postdeploy
  disable_ddl_transaction!

  def up
    remove_index :lti_resource_links, column: :lti_1_1_id, if_exists: true, algorithm: :concurrently
  end

  def down
    add_index :lti_resource_links, :lti_1_1_id, unique: true, algorithm: :concurrently, if_not_exists: true, where: "lti_1_1_id IS NOT NULL"
  end
end