asset.php

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<?php
/**
 * @package     Joomla.Platform
 * @subpackage  Table
 *
 * @copyright   Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE
 */

defined('JPATH_PLATFORM') or die;

/**
 * Table class supporting modified pre-order tree traversal behavior.
 *
 * @package     Joomla.Platform
 * @subpackage  Table
 * @link        http://docs.joomla.org/JTableAsset
 * @since       11.1
 */
class JTableAsset extends JTableNested
{
        /**
         * The primary key of the asset.
         *
         * @var    integer
         * @since  11.1
         */
        public $id = null;

        /**
         * The unique name of the asset.
         *
         * @var    string
         * @since  11.1
         */
        public $name = null;

        /**
         * The human readable title of the asset.
         *
         * @var    string
         * @since  11.1
         */
        public $title = null;

        /**
         * The rules for the asset stored in a JSON string
         *
         * @var    string
         * @since  11.1
         */
        public $rules = null;

        /**
         * Constructor
         *
         * @param   JDatabaseDriver  $db  Database driver object.
         *
         * @since   11.1
         */
        public function __construct(JDatabaseDriver $db)
        {
                parent::__construct('#__assets', 'id', $db);
        }

        /**
         * Method to load an asset by its name.
         *
         * @param   string  $name  The name of the asset.
         *
         * @return  integer
         *
         * @since   11.1
         */
        public function loadByName($name)
        {
                $query = $this->_db->getQuery(true)
                        ->select($this->_db->quoteName('id'))
                        ->from($this->_db->quoteName('#__assets'))
                        ->where($this->_db->quoteName('name') . ' = ' . $this->_db->quote($name));
                $this->_db->setQuery($query);
                $assetId = (int) $this->_db->loadResult();

                if (empty($assetId))
                {
                        return false;
                }

                return $this->load($assetId);
        }

        /**
         * Assert that the nested set data is valid.
         *
         * @return  boolean  True if the instance is sane and able to be stored in the database.
         *
         * @link    http://docs.joomla.org/JTable/check
         * @since   11.1
         */
        public function check()
        {
                $this->parent_id = (int) $this->parent_id;

                // JTableNested does not allow parent_id = 0, override this.
                if ($this->parent_id > 0)
                {
                        // Get the JDatabaseQuery object
                        $query = $this->_db->getQuery(true)
                                ->select('COUNT(id)')
                                ->from($this->_db->quoteName($this->_tbl))
                                ->where($this->_db->quoteName('id') . ' = ' . $this->parent_id);
                        $this->_db->setQuery($query);

                        if ($this->_db->loadResult())
                        {
                                return true;
                        }
                        else
                        {
                                $this->setError('Invalid Parent ID');

                                return false;
                        }
                }

                return true;
        }
}