title: Using Django auth User model as a Foreignkey and reverse relations
body: <p>I am using the <code>User</code> model from  <code>django.contrib.auth.models</code>. I have another model called <code>Post</code> which references <code>User</code> through a foreign key. </p>
  
  <p>The problem is when I try to access a logged in user's posts through</p>
  
  <pre><code>request.user.post_set.order_by('-timestamp')
  </code></pre>
  
  <p>I get an error, <code>User</code> object has no attribute <code>post_set</code>. So how do I use the default auth model with foreign keys?</p>