title: Order by for relationship in eloquent
body: <p>I have a tables: </p>
  
  <ol>
  <li>Analyses, columns(<code>id, name, game_id(FK)</code>);</li>
  <li>Games, columns(<code>id, name, round_id(FK)</code>);</li>
  <li>Round, columns(<code>id, round</code>);</li>
  </ol>
  
  <p>I need get all records of Analyses order by (<code>round_id</code>).</p>
  
  <p>I try <code>Analyses::orderBy('round_id')-&gt;get()</code>, but not work;</p>