controllers/grid/settings/user/form/UserForm.inc.php

<?php

import('lib.pkp.classes.form.Form');

class UserForm extends Form {

   var $userId;

   function UserForm($template, $userId = null) {
      parent::Form($template);

      $this->userId = isset($userId) ? (int) $userId : null;

      if (!is_null($userId)) {
         $this->addCheck(new FormValidatorListBuilder($this, 'roles', 'manager.users.roleRequired'));
      }
   }

   function readInputData() {
      $this->readUserVars(array('roles'));
   }

   function execute($request) {
      ListbuilderHandler::unpack($request, $this->getData('roles'));
   }

   function insertEntry(&$request, $newRowId) {
      $press =& $request->getPress();
      $userGroupDao =& DAORegistry::getDAO('UserGroupDAO');

      $userGroupId = (int) $newRowId['name'];
      $userId = (int) $this->userId;

      // Ensure that:
      // $userGroupId is not empty
      // $userGroupId is valid for this press
      // user group assignment does not already exist
      if (
         empty($userGroupId) ||
         !$userGroupDao->contextHasGroup($press->getId(), $userGroupId) ||
         $userGroupDao->userInGroup($userId, $userGroupId)
      ) {
         return false;
      } else {
         // Add the assignment
         $userGroupDao->assignUserToGroup($userId, $userGroupId);
      }

      return true;
   }

   function deleteEntry(&$request, $rowId) {
      $userGroupId = (int) $rowId;
      $userId = (int) $this->userId;

      $userGroupDao =& DAORegistry::getDAO('UserGroupDAO');
      $press =& $request->getPress();

      $userGroupDao->removeUserFromGroup(
         $userId,
         (int) $userGroupId,
         $press->getId()
      );

      return true;
   }

}

?>