/**
  * Process form: create a list
  */
 private function create()
 {
     global $wpdb;
     $podcasts = array();
     foreach ($_POST['podlove_list']['podcasts'] as $podcast) {
         $podcasts[] = $podcast;
     }
     $_POST['podlove_list']['podcasts'] = json_encode($podcasts);
     PodcastList::activate_network_scope();
     $list = new PodcastList();
     $list->update_attributes($_POST['podlove_list']);
     PodcastList::deactivate_network_scope();
     $this->redirect('index');
 }