# frozen_string_literal: true class MakeUserAuthTokenIndexUnique < ActiveRecord::Migration[4.2] def up remove_index :user_auth_tokens, [:auth_token] remove_index :user_auth_tokens, [:prev_auth_token] add_index :user_auth_tokens, [:auth_token], unique: true add_index :user_auth_tokens, [:prev_auth_token], unique: true end def down # no op, this should always have been unique end end