title: How do I compare 2 eloquent collections and remove whats in one from the other?
body: <p>I have a collection of all doors, and a collection of doors that the current user has access to.  How can I compare the two and remove from the all doors collection the doors the user already has access to?</p>
  
  <pre><code>$doors = Door::orderBy('name', 'asc')-&gt;get();
  $users_doors = $user-&gt;doors;
  </code></pre>
  
  <p>Here are the two collections.</p>