/**
  * Delete a Tag
  *
  * @param Gdn_Controller $Sender
  */
 public function controller_delete($Sender)
 {
     $Sender->permission('Garden.Settings.Manage');
     $TagID = val(1, $Sender->RequestArgs);
     $TagModel = new TagModel();
     $Tag = $TagModel->getID($TagID, DATASET_TYPE_ARRAY);
     if ($Sender->Form->authenticatedPostBack()) {
         // Delete tag & tag relations.
         $SQL = Gdn::sql();
         $SQL->delete('TagDiscussion', array('TagID' => $TagID));
         $SQL->delete('Tag', array('TagID' => $TagID));
         $Sender->informMessage(formatString(t('<b>{Name}</b> deleted.'), $Tag));
         $Sender->jsonTarget("#Tag_{$Tag['TagID']}", null, 'Remove');
     }
     $Sender->setData('Title', t('Delete Tag'));
     $Sender->render('delete', '', 'plugins/Tagging');
 }