db/migrate/20210222085551_add_epic_board_user_preference_epic_list_fk.rb


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# frozen_string_literal: true

class AddEpicBoardUserPreferenceEpicListFk < ActiveRecord::Migration[6.0]
  include Gitlab::Database::MigrationHelpers

  DOWNTIME = false

  disable_ddl_transaction!

  def up
    add_concurrent_foreign_key :boards_epic_list_user_preferences, :boards_epic_lists, column: :epic_list_id, on_delete: :cascade
  end

  def down
    with_lock_retries do
      remove_foreign_key_if_exists :boards_epic_list_user_preferences, :boards_epic_lists
    end
  end
end