Slideshow - PicLens shows only first page of Album when viewing Gallery2 Albums via Drupal

OK, did some more googling and found that this is related to the way the RSS Feed is handled within the Gallery Module.

I modified the code within the gallery.module file as recommended in http://drupal.org/node/395944 and got the PicLens slideshow working.

Only additional thing I had to do was put the fix in two places:

1. For the body - this works fine when the Gallery Sidebar has not been moved into the Gallery Navigation block

return preg_replace('/index.php\?q\=gallery\&amp\;g2\_view\=slideshow.SlideshowMediaRss\&amp\;g2_itemId\=([0-9]+)/i', 'gallery2/main.php?g2_view=slideshow.SlideshowMediaRss&g2_itemId=${1}', $result['bodyHtml']);

2. For the Sidebar - When you go into Gallery Settings and choose to move the Gallery Sidebar into the Gallery Navigation block, the above fix will not suffice. In this case you need to add the following:

$GLOBALS['gallery_sidebar'] = preg_replace('/index.php\?q\=gallery\&amp\;g2\_view\=slideshow.SlideshowMediaRss\&amp\;g2_itemId\=([0-9]+)/i', 'gallery2/main.php?g2_view=slideshow.SlideshowMediaRss&g2_itemId=${1}', $result['sidebarBlocksHtml']);

instead of

$GLOBALS['gallery_sidebar'] = $result['sidebarBlocksHtml'];

in the function gallery_page()

Hope this is of some help.

A permanent fix for this problem would be really good.

Regards,
KH

Just an update. The above fix will only work if your Gallery2 installation is within the same domain as your Drupal installation. Even if you have installed Gallery2 in a subdomain, it will cause a cross domain security issue and will not work on some browsers.

I noticed that the fix that I suggested above worked perfectly till Mozilla decided to come out with Firefox 3.5.

The fix does not work on Firefox 3.5 as, I am guessing, Firefox 3.5 is more stringent about cross domain security. The Piclens slideshow will not load on Firefox 3.5 with this setting.

More reading on this and related issues at the following locations:

1. http://gallery.menalto.com/node/83849#comment-315144
2. http://drupal.org/node/516494#comment-1861708

Regards,
KH

OK. Have another workaround to make this work with Gallery2 installed in a different/sub domain. I used a PHP XML Proxy that I obtained from http://developer.yahoo.com/javascript/howto-proxy.html.

I modified that code as below:

<?php
// PHP Proxy example for Yahoo! Web services. 
// Responds to both HTTP GET and POST requests
//
// Author: Jason Levitt
// December 7th, 2005
//

// Allowed hostname (api.local and api.travel are also possible here)
define ('HOSTNAME', 'http://gallery2.mysite.com/main.php?g2_view=slideshow.SlideshowMediaRss&g2_itemId=');

// Get the REST call path from the AJAX application
// Is it a POST or a GET?
$g2_itemId = ($_POST['g2_itemId']) ? $_POST['g2_itemId'] : $_GET['g2_itemId'];
$url = HOSTNAME.$g2_itemId;

// Open the Curl session
$session = curl_init($url);

// If it's a POST, put the POST data in the body
//if ($_POST['yws_path']) {
//	$postvars = '';
//	while ($element = current($_POST)) {
//		$postvars .= key($_POST).'='.$element.'&';
//		next($_POST);
//	}
//	curl_setopt ($session, CURLOPT_POST, true);
//	curl_setopt ($session, CURLOPT_POSTFIELDS, $postvars);
//}

// Don't return HTTP headers. Do return the contents of the call
curl_setopt($session, CURLOPT_HEADER, false);
curl_setopt($session, CURLOPT_RETURNTRANSFER, true);

// Make the call
$xml = curl_exec($session);

// The web service returns XML. Set the Content-Type appropriately
header("Content-Type: text/xml");

echo $xml;
curl_close($session);

?>

I saved this modified code as a file rssproxy.php and uploaded it to the root directory of my site and then modified the gallery_page() function within the gallery.module file as below:

$GLOBALS['gallery_sidebar'] = preg_replace('/index.php\?q\=gallery2\&amp\;g2\_view\=slideshow.SlideshowMediaRss\&amp\;g2_itemId\=([0-9]+)/i', 'rssproxy.php?g2_itemId=${1}', $result['sidebarBlocksHtml']);

instead of

$GLOBALS['gallery_sidebar'] = $result['sidebarBlocksHtml'];

and

return preg_replace('/index.php\?q\=gallery2\&amp\;g2\_view\=slideshow.SlideshowMediaRss\&amp\;g2_itemId\=([0-9]+)/i', 'rssproxy.php?g2_itemId=${1}', $result['bodyHtml']);

instead of

return $result['bodyHtml'];

I uploaded the modified gallery.module and the new XML Proxy to the Drupal website and voila! It now works.

Regards,
KH