function setObjUserPermission($user, $obj, $canWrite)
 {
     $obj_perm = ObjectUserPermissions::findOne(array('conditions' => "rel_object_id = " . $obj->getId() . " AND rel_object_manager = '" . $obj->getObjectManagerName() . "' AND user_id = " . $user->getId()));
     if ($obj_perm) {
         $obj_perm->setColumnValue('can_write', $canWrite);
     } else {
         $obj_perm = new ObjectUserPermission();
         $obj_perm->setFromAttributes(array('rel_object_id' => $obj->getId(), 'rel_object_manager' => $obj->getObjectManagerName(), 'user_id' => $user->getId(), 'can_read' => 1, 'can_write' => $canWrite));
     }
     try {
         DB::beginWork();
         $obj_perm->save();
         DB::commit();
     } catch (Exception $e) {
         DB::rollback();
         flash_error($e->getMessage());
         ajx_current("empty");
     }
 }