<?php
/**
 * Populate form element's values view
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package WB
 * @subpackage db
 */

WBClass::load('WBDatasource_FormAttribute');

/**
 * Populate form element's values from any table
 *
 * Use datasource view to populate list
 *
 * @version 0.1.0
 * @package WB
 * @subpackage db
 */
class WBDatasource_FormAttribute_View extends WBDatasource_FormAttribute
{
    /**
     * configuration parameter
     * @var array
     */
    protected $config   =   array(
                                'view'          =>  'adminuser',
                                'valuecolumn'   =>  'uid',
                                'labelcolumns'  =>  array('surname', 'forename', 'nickname'),
                                'labelformat'   =>  '%s, %s (%s)'
                            );

    /**
     * view
     * @var WBDatasource_Vier
     */
    protected $view;

    /**
     * view
     * @var WBDatasource_Renderer_Array
     */
    protected $rendy;

    /**
     * get attribute's value
     *
     * Use dicktionary to fetch list of values
     *
     * @param mixed $current actual attribute value
     * @return array
     */
    protected function getAttributeValue($current)
    {
        $this->view     =   WBClass::create('WBDatasource_View');
        $this->randy    =   WBClass::create('WBDatasource_Renderer_Array');

        if (!is_array($current)) {
            $current =   array();
        }

        $this->view->setRenderer($this->randy);
        $this->view->render('view/' . $this->config['view']);

        $list       =   $this->randy->getList();
        if (empty($list)) {
            return $current;
        }

        // append list
        $primary    =   $this->config['valuecolumn'];
        foreach ($list as $v => $l) {
            $cols       =   array();
            foreach ($this->config['labelcolumns'] as $lc) {
                $cols[] =   $l[$lc];
            }
            $current[]  =   array(
                                'value' =>  $l[$primary],
                                'label' =>  vsprintf($this->config['labelformat'], $cols)
                        );
        }

        return $current;
    }
}
?>