Converts Omeka's advanced search output into acceptable input for findBy().

convert_search_filters.php

<?php

/**
 * Converts the advanced search output into acceptable input for findBy().
 *
 * @see Omeka_Db_Table::findBy()
 * @param array $query HTTP query string array
 * @return array Array of findBy() parameters
 */
function neatlinetime_convert_search_filters($query) {

    $params = array();

    foreach($query as $paramName => $paramValue) {
        if (is_string($paramValue) && trim($paramValue) == '') {
            continue;
        }

        switch($paramName) {
            case 'user':
                if (is_numeric($paramValue)) {
                    $params['user'] = $paramValue;
                }
            break;

            case 'public':
            case 'featured':
            case 'random':
            case 'hasImage':
                $params[$paramName] = is_true($paramValue);
            break;

            case 'recent':
                if (!is_true($paramValue)) {
                    $params['recent'] = false;
                }
            break;

            case 'tag':
            case 'tags':
                $params['tags'] = $paramValue;
            break;

            case 'search':
                $params['search'] = $paramValue;
                //Don't order by recent-ness if we're doing a search
                unset($params['recent']);
            break;

            case 'advanced':
                //We need to filter out the empty entries if any were provided
                foreach ($paramValue as $k => $entry) {
                    if (empty($entry['element_id']) || empty($entry['type'])) {
                        unset($paramValue[$k]);
                    }
                }
                if (count($paramValue) > 0) {
                    $params['advanced_search'] = $paramValue;
                }
            break;

            default:
                $params[$paramName] = $paramValue;
            break;

        }
    }

    return $params;
}