<?php
/**
 * @version		$Id: sql.php 16825 2010-05-05 12:10:37Z louis $
 * @package		Joomla.Framework
 * @subpackage	Form
 * @copyright	Copyright (C) 2005 - 2010 Open Source Matters, Inc. All rights reserved.
 * @license		GNU General Public License version 2 or later; see LICENSE.txt
 */

defined('JPATH_BASE') or die;

jimport('joomla.html.html');
jimport('joomla.form.formfield');
jimport('joomla.form.helper');
JFormHelper::loadFieldClass('list');

/**
 * Supports an SQL select list of menu
 *
 * @package		Joomla.Framework
 * @subpackage	Form
 * @since		1.6
 */
class JFormFieldSQL extends JFormFieldList
{
	/**
	 * The form field type.
	 *
	 * @var		string
	 * @since	1.6
	 */
	public $type = 'SQL';

	/**
	 * Method to get the field options.
	 *
	 * @return	array	The field option objects.
	 * @since	1.6
	 */
	protected function getOptions()
	{
		// Initialize variables.
		$options = array();

		// Initialize some field attributes.
		$key	= $this->element['key_field'] ? (string) $this->element['key_field'] : 'value';
		$value	= $this->element['value_field'] ? (string) $this->element['value_field'] : (string) $this->element['name'];
		$query	= (string) $this->element['query'];

		// Get the database object.
		$db = JFactory::getDBO();

		// Set the query and get the result list.
		$db->setQuery($query);
		$items = $db->loadObjectlist();

		// Check for an error.
		if ($db->getErrorNum()) {
			JError::raiseWarning(500, $db->getErrorMsg());
			return $options;
		}

		// Build the field options.
		if (!empty($items)) {
			foreach($items as $item) {
				$options[] = JHtml::_('select.option', $item->$key, $item->$value);
			}
		}

		// Merge any additional options in the XML definition.
		$options = array_merge(parent::getOptions(), $options);

		return $options;
	}
}
