Automatic adding Lightbox rel and group to images in posts?

Any ideas anybody? Would think this must be useful for many others that do not want to go through xxx posts to update manually the image tags.

function addlightboxrel_replace($string)
{
	$pattern = '/<a(.*?)href="(.*?).(bmp|gif|jpeg|jpg|png)"(.*?)>/i';
  	$replacement = '<a$1href="$2.$3" rel="Lightbox[imagegroup]$4>';
	return preg_replace($pattern, $replacement, $string);
}

sir, is this still in development?

MANY THANKS! It works now!
Below the full code.

I still would lile to make the [imagegroup] unique per post, so that all images per post are grouped in one lightbox set.

How could I implement that? I tried adding post_title but that did not work…

<?php
/*
Plugin Name: Add lightbox
*/

define("IMAGE_FILETYPE", "(bmp|gif|jpeg|jpg|png)", true);

function addlightboxrel_replace($string) {
	$pattern = '/<a(.*?)href="(.*?).(bmp|gif|jpeg|jpg|png)"(.*?)>/i';
  	$replacement = '<a$1href="$2.$3" rel=\'Lightbox[imagegroup]\'$4>';
	return preg_replace($pattern, $replacement, $string);
}

add_filter('the_content', 'addlightboxrel_replace');

?>

Hi Michiel,
Here’s the code that I’ve modified to :
– make the [imagegroup] unique per post (lightbox[id of the post]
– Have it work if the url of the image is surrounded by ” and not by ‘

<?php
/*
Plugin Name: Add lightbox
*/
add_filter('the_content', 'addlightboxrel_replace');
function addlightboxrel_replace ($content)
{	global $post;
	$pattern = "/<a(.*?)href=('|\")(.*?).(bmp|gif|jpeg|jpg|png)('|\")(.*?)>/i";
  	$replacement = '<a$1href=$2$3.$4$5 rel="lightbox[%LIGHTID%]"$6>';
    $content = preg_replace($pattern, $replacement, $content);
	$content = str_replace("%LIGHTID%", $post->ID, $content);
    return $content;
}
?>

I don’t really care about the groups, but I’ve been trying to add the rel=’lightbox’ code automatically by editing upload-js.php.

However, when I add it to the HREF tags, nothing happens. I click “send to editor” and the code WP spits out still doesn’t have rel=’lightbox’.

Any help?

Nevermind! I’m just going to use the “flexible upload” plug-in, much easier!

I am the same as bryan and cannot see the change in the href. I just want the rel=”lightbox” to show..

any help or suggestions for some other way.

Hi
This is an example page.

I have actually manually added the rel=”thumbnail” (using this plugin instead) so it works but it does not add it automaticaly which my germworks page does.

Hi, I’m beta-testing a plugin that works similarly to lightbox and can automatically use all image links on a page. There’s no need to add any rel=… etc. Check it out:
https://www.laptoptips.ca/projects/wp-shutter-reloaded/