title: findOrFail() in Query\Builder
body: <pre><code>DB::table('amounts')-&gt;findOrFail($id);
  </code></pre>
  
  <p>return </p>
  
  <blockquote>
    <p><strong>Call to undefined method Illuminate\Database\Query\Builder::findOrFail()</strong></p>
  </blockquote>
  
  <p>I don't want to use models here. </p>
  
  <p>What's the best way to achieve this ? (I just want to return a <code>404</code> when the id is not in the table.)</p>
  
  <hr>
  
  <p>In the meantime I do:</p>
  
  <pre><code>$amount = DB::table('amounts')-&gt;find($request-&gt;input('amount'));
  if(!$amount) abort(404);
  </code></pre>