/**
  * Remove this page from archive
  *
  * @param void
  * @return null
  */
 function unarchive()
 {
     if ($this->active_page->isNew()) {
         $this->httpError(HTTP_ERR_NOT_FOUND);
     }
     // if
     if (!$this->active_page->canEdit($this->logged_user)) {
         $this->httpError(HTTP_ERR_FORBIDDEN);
     }
     // if
     if ($this->request->isSubmitted()) {
         $this->active_page->setIsArchived(false);
         $save = $this->active_page->save();
         if ($save && !is_error($save)) {
             if ($this->request->isApiCall()) {
                 $this->serveData($this->active_page, 'page');
             } else {
                 flash_success('Page ":name" has been archived', array('name' => $this->active_page->getName()));
             }
             // if
         } else {
             if ($this->request->isApiCall()) {
                 $this->serveData($save);
             } else {
                 flash_error('Failed to archive ":name" page', array('name' => $this->active_page->getName()));
             }
             // if
         }
         // if
         $this->redirectToUrl($this->active_page->getViewUrl());
     } else {
         $this->httpError(HTTP_ERR_BAD_REQUEST);
     }
     // if
 }