At the moment I am using the below query:

$claims = ClaimQuery::create('c')
        ->leftJoinUser()
        ->withColumn('CONCAT(User.Firstname, " ", User.Lastname)', 'name')
        ->withColumn('User.Email', 'email')
        ->filterByArray($conditions)
        ->paginate($page = $page, $maxPerPage = $top);

However I then want to add columns manually, so I thought this would simply work:

foreach($claims as &$claim){
    $claim->actions = array('edit' => array(
            'url' => $this->get('router')->generate('hera_claims_edit'),
            'text' => 'Edit'    
            )
        );
    }

return array('claims' => $claims, 'count' => count($claims));

However when the data is returned Propel or Symfony2 seems to be stripping the custom data when it gets converted to JSON along with all of the superflous model data.

What is the correct way of manually adding data this way?