$form->add( new \IPS\Helpers\Form\Node( 'ct_forum', isset( $data['ct_forum'] ) ? $data['ct_forum'] : NULL, TRUE, array(
'url' => \IPS\Http\Url::internal( "app=forums&module=forums&controller=topic&id={$topic->tid}", 'front', 'forums_topic' ),
'class' => 'IPS\forums\Forum',
'permissionCheck' => function ( $forum ) { return $forum->sub_can_post and !$forum->redirect_url; },
) ) );