root/trunk/patForms/Rule/StorageProhibitUpdate.php

<?php
/**
 * patForms Rule Retype
 *
 * $Id$
 *
 * @package        patForms
 * @subpackage    Rules
 */

/**
 * patForms Rule NoUpdate
 *
 * Checks whether an entry exists and permits update of it by using the storage
 * container which is responsible for saving.
 *
 * @package        patForms
 * @subpackage    Rules
 * @author        Frank Kleine <frank.kleine@schlund.de>
 * @license        LGPL, see license.txt for details
 * @link        http://www.php-tools.net
 */
class patForms_Rule_StorageProhibitUpdate extends patForms_Rule
{
   /**
    * define error codes and messages for the rule
    *
    * @access    private
    * @var        array    $validatorErrorCodes
    * @todo     translate error messages
    */
    var    $validatorErrorCodes  =   array(
        'C'    =>    array(
            1    =>    'An entry with your data exists.',
        ),
        'de' =>    array(
            1    =>    'Es besteht bereits ein Eintrag mit Ihren Daten.',
        ),
        'fr' =>    array(
            1    =>    'Une entrée existe déjà pour vos données.',
        )
    );

   /**
    * the storage container
    * @access    private
    * @var        array
    */
    var $_storage;

   /**
    * set the storage that can deliver if the entry exists
    *
    * @access    public
    * @param    object    storage
    */
    function setStorage(&$storage)
    {
        $this->_storage    =& $storage;
    }

   /**
    * method called by patForms or any patForms_Element to validate the
    * element or the form.
    *
    * @access    public
    * @param    object patForms    form object
    */
    function applyRule(&$form, $type = PATFORMS_RULE_AFTER_VALIDATION)
    {
        if ($this->_storage->entryExists(&$form) === true) {
            $this->addValidationError(1);
            return false;
        }
        return true;
    }
}
?>