title: MongooseJS: Hide Specific Documents From Query
body: <p>I have a User schema with a activated field of Boolean type. I want queries to only return documents which have <code>activated: true</code>. And I hope there is a more efficient and DRY way of doing so than adding a conditional to every find, findOne, or findById. </p>
  
  <p>What would be the most effective approach?</p>