sdr/ui/SDRHelpers.php5

<?php

abstract class SDRHelpers extends SObject {

    const SNAPDIR = "http://www.shodor.org/media/content//sdr/";

    // Define the commonly used GET_ATTRS so that we can validate them by type when pages load
    public static $GET_ATTRS = array(
            'reviewId' => array( 'type' => SValidation::TYPE_NUMBER,
                                 'null' => false),
            'cserdId' => array(  'type' => SValidation::TYPE_NUMBER,
                                 'null' => false),
            'form' => array(     'type' => SValidation::TYPE_ALPHA,
                                 'null' => false),
            'ss' => array(       'type' => SValidation::TYPE_STRING,
                                 'null' => true),
            'sr' => array(       'type' => SValidation::TYPE_NUMBER,
                                 'null' => true),
            'orderBy' => array(  'type' => SValidation::TYPE_ALPHA,
                                 'null' => true)
                                );


    public static function getResourceFromSDR($id) {
        $ss = new SDRSearchService();
        $resource = $ss->getResource($id, array('extra' => array('metadata')));
        if (!$resource) {
            return null;
        }
        return $resource;       
    }

    public static function getRatingImageTag($rating){
        if ($rating == 0) return '<small>(Not Rated)</small>';
        $ratingPath = self::SNAPDIR . "rating/stars-" . (int)$rating;
        $ratingAlt = self::getRatingText($rating);
        return "<img src='$ratingPath' alt='User Rating: $ratingAlt'/>";
    }

    public static function getRatingText($rating){
        return (($rating == 0) ? '' : $rating . ' / 5');
    }

    public static function urlParser($addArgs = null, $removeArgs = null) {
        // Get the current url
        $url = $_SERVER['REQUEST_URI'];

        // Separate the url base from the arguments
        $parts = explode('?', $url);
        $urlBase = $parts[0];
        
        // Parses out the arguments in the url and adds them to an array
        $urlArgs = self::parseArguments($addArgs, $removeArgs);

        // Build up the new url, starting with the base
        $newURL = $urlBase;

        // Add a question mark if there are arguments
        if (count($urlArgs) > 0) {
            $newURL .= "?";
        }

        // Add one arg at a time
        foreach ($urlArgs as $key => $value) {
            if ($value == '')
                $newURL .= "$key&";
            else
                $newURL .= "$key=$value&";
        }

        // Remove the last ampersand
        if (count($urlArgs) > 0) {
            $newURL = substr($newURL, 0, -1);
        }

        return $newURL;
    }

    public static function parseArguments($addArgs = null, $removeArgs = null) {
        // Get the current url
        $url = $_SERVER['REQUEST_URI'];

        // Separate the url base from the arguments
        $parts = explode('?', $url);
        
        $urlArgs = array();
        // Parses out the arguments in the url and adds them to an array
        if (isset($parts[1])) {
            $argParts = explode('&', $parts[1]);
            foreach($argParts as $argPart) {
                $defParts = explode('=', $argPart);
                if (isset($defParts[1]))
                    $urlArgs[$defParts[0]] = $defParts[1];
                else
                    $urlArgs[$defParts[0]] = '';
            }
        }
        // Add the arguments in addArgs
        if ($addArgs != null) {
            foreach($addArgs as $key => $value) {
                $urlArgs[$key] = $value;
            }
        }
        
        // Remove the arguments in removeArgs
        if ($removeArgs != null) {
            foreach($removeArgs as $key => $value) {
                unset($urlArgs[$key]);
            }
        }

        return $urlArgs;
    }

}

?>

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