title: How to use withErrors with Exception error messages in Laravel4?
body: <p>Assume that I have this <code>Exception Message</code></p>
  
  <pre><code>catch (Cartalyst\Sentry\Users\LoginRequiredException $e)
  {
       echo 'Login field is required.';
  }
  </code></pre>
  
  <p>How can I pass this message  <em>Login field is required</em> using <code>withErrors()</code>?</p>
  
  <pre><code>return Redirect::to('admin/users/create')-&gt;withInput()-&gt;withErrors();
  </code></pre>