controllers/carousel/CarouselHandler.inc.php

<?php

// Import the base Handler.
import('classes.handler.Handler');

// Import JSON class for use with all AJAX requests.
import('lib.pkp.classes.core.JSONMessage');

class CarouselHandler extends Handler {

   function CarouselHandler() {
      parent::Handler();
   }


   function authorize($request, $args, $roleAssignments) {
      import('lib.pkp.classes.security.authorization.ContextRequiredPolicy');
      $this->addPolicy(new ContextRequiredPolicy($request));

      return parent::authorize($request, $args, $roleAssignments);
   }

   //
   // Public handler methods
   //
   function fetch($args, &$request) {
      $this->setupTemplate();

      $press =& $request->getPress();
      $templateMgr =& TemplateManager::getManager();

      // Expose the featured monograph IDs and associated params
      $featureDao =& DAORegistry::getDAO('FeatureDAO');
      $featuredMonographIds = $featureDao->getSequencesByAssoc(ASSOC_TYPE_PRESS, $press->getId());

      if (empty($featuredMonographIds)) {
         $returner = null;
      } else {
         $templateMgr->assign('featuredMonographIds', $featuredMonographIds);

         // Fetch the monographs to display
         $publishedMonographDao =& DAORegistry::getDAO('PublishedMonographDAO');
         $publishedMonographs =& $publishedMonographDao->getByPressId($press->getId());
         $templateMgr->assign('publishedMonographs', $publishedMonographs->toAssociativeArray());

         // Render the carousel.
         $returner = $templateMgr->fetch('catalog/carousel.tpl');
      }

      $json = new JSONMessage(true, $returner);
      return $json->getString();
   }
}
?>