title: How to make Laravel (Blade) text field readonly
body: <p>I have a text box that needs to be made <code>readonly</code>; I don't want to use <code>array('disabled' =&gt; 'true')</code> because I need PHP to process the field:</p>
  
  <pre><code>{{ Form::text('login_token', Worker::generateLoginToken()) }}
  </code></pre>
  
  <p>How do you add this attribute?</p>