mastodon/db/migrate/20171201000000_change_account_id_nonnullable_in_lists.rb

require Rails.root.join('lib', 'mastodon', 'migration_helpers')

class ChangeAccountIdNonnullableInLists < ActiveRecord::Migration[5.1]
  def change
    change_column_null :lists, :account_id, false
  end
end