/**
  * Browse all resources.
  *
  * @return void
  * @access public
  * @static
  */
 function browse($action = NULL)
 {
     $units = CRM_Booking_DAO_ResourceConfigOption::buildOptions('unit_id', 'create');
     // get all config option sorted by weight
     $configOptions = array();
     $dao = new CRM_Booking_DAO_ResourceConfigOption();
     $dao->set_id = $this->_sid;
     $dao->orderBy('weight');
     $dao->is_deleted = FALSE;
     $dao->find();
     while ($dao->fetch()) {
         $configOptions[$dao->id] = array();
         CRM_Core_DAO::storeValues($dao, $configOptions[$dao->id]);
         $configOptions[$dao->id]['unit'] = CRM_Utils_Array::value(CRM_Utils_Array::value('unit_id', $configOptions[$dao->id]), $units);
         // form all action links
         $action = array_sum(array_keys($this->links()));
         // update enable/disable links.
         if ($dao->is_active) {
             $action -= CRM_Core_Action::ENABLE;
         } else {
             $action -= CRM_Core_Action::DISABLE;
         }
         $configOptions[$dao->id]['action'] = CRM_Core_Action::formLink(self::links(), $action, array('id' => $dao->id, 'sid' => $this->_sid));
     }
     $this->assign('rows', $configOptions);
 }