regenerate thumbnails in cache via script

scorch

i'd like to be able to trigger thumbnail creation via script, after adding a large number of files, to save generating them on the fly. with over 10GB of images & adding about 1GB per month, it makes sense to be able to do this in advance, to keep load down

trisweb

Quite easy. This will load a page of all thumbnails and default-sized images in your gallery:

`

<?php <br />
require_once("zen/template-functions.php");

$count = 0;

echo 'Loading...
';

while (next_album()):

while (next_image()):

echo ' /
';

$count++;

endwhile;

endwhile;

echo "Finished: Total of $count images.

";

?>

`

scorch

thanks!

I dropped this in zen/* with all the other bits as rebuild.php, stripped out the zen/ path header & ran it, with a ."\n" at the end of the echo line for readability:

php rebuild.php
<.../

Finished: Total of 459 images.

-- in about 10 seconds. i'm a little suspicious as i know i have 9000 images online so far... and only 530 thumbnails in cache/

the first folder it picks up has about 350 images in it, but ZP only gets to the first 30 before heading off to the next ones. this is a pattern - if the album has > 30 images, ZP skips to the next before finishing.

i'd guess there needs to be something like a "next page" in between the next_album and next_image loops...

i can provide debug output or any other info if you let me know what is needed.

you can grab the log from this run as:

http://muse.net.nz/zenphoto/cache/rebuild.log

thanks, scorch

PS i still haven't figured out how/where i can rotate images yet ... is there a how-to somewhere i missed?

trisweb

Oh right, that may help.... heh. Try this (Improved in other ways as well):

`

<?php <br />
require_once("zen/template-functions.php");

$count = 0;

echo 'Loading...
';

$_zp_page = 0;

while (next_album()) {

while (next_image()) {

echo ''."n";

$count++;

if ($count % 20 == 0) echo "
n";

}

}

echo "n
Finished: Total of $count images.

";

?>

`

scorch

that works nicely thanks - but only if it's under zenphoto/rebuild.php

is it possible to change to run from zephoto/zen/ & then leave it in SVN? that would be a useful addition.

e.g. as http://muse.net.nz/zenphoto/zen/rebuild.php

trisweb

To change it for that, just take the `zen/` out of the require_once path string. I don't think I'll check it in to SVN just yet, perhaps a similar functionality will be in the 1.1 admin though.

scorch

thanks! just a point - this takes hours to run through. if you ever move it into svn, it would be a good move to add it as a button to a folder level "regenerate" for example.

permesso

Sorry to revive an old thread but I am really looking for this functionality but I heavily use sub-albums and this script is not decending into the sub-albums. Is there a quick change to the script that would help? Thanks in advance.

edasque

same here, any hope for a recursive version of this ?

aitf311

Anyone figure out a way to get this working for subalbums yet? This would be a very useful script to have in the admin page.

sbillard

Here is a routine which will do what you want. Copy it into your zen folder with the rest of the php files. Then point your browser to it.

`

<?php <br />
require_once("template-functions.php");

global $_zp_gallery;

$count = 0;

function loadAlbum($album) {

global $_zp_current_album;

echo "
Processing " . $album->name . "n";

$subalbums = $album->getSubAlbums();

foreach ($subalbums as $folder) {

$subalbum = new Album($album, $folder);

$count = $count + loadAlbum($subalbum);

}

$_zp_current_album = $album;

if (getNumImages() > 0) {

echo "
n";

while (next_image()):

echo ' | ' . "n";

$count++;

endwhile;

}

echo "
Finished with " .$album->name . "n";

return $count;

}

if (isset($_GET['album'])) {

$folder = strip($_GET['album']);

$album = new Album($album, $folder);

$count = loadAlbum($album);

} else {

echo "Processing Galleryn";

$albums = $_zp_gallery->getAlbums();

foreach ($albums as $folder) {

$album = new Album($album, $folder);

$count = $count + loadAlbum($album);

}

}

echo "
Finished: Total of $count images.";

?>

`

If you don't want to do your whole gallery, just pass the file an album parameter with the name of the album you wish to process.

e.g. http://myalbum.zenphoto.com/zenphoto/zen/loadAlbums.php?album=newalbum

grantonstar

I'm using the latest script from sbillard on zenphoto 1.2.2. getNumImages() returns the count of images for each album but next_image() doesn't seem to be returning any images.

Any ideas why? Does anyone have an updated cache script? (I need it for my gallery migration)

Thanks,

grantonstar

sbillard

1.1.2 has the pre-cache images utility, why don't you use that.

grantonstar

THe main reason why is because it is unable to cache 17k images at once. Either it times out or the browser crashes.

The reason I want to pre-cache is to run the Gallery migration utility.

sbillard

Pre-cache by album/subalbum. What makes you think the above script will not also time out? It is, after all, basically the same code as the pre-cache utility.

nonzero

Are there any includes or bootstrapping code I need to add to the script to run it from the command line of the web server rather than through a browser? I'm working with images that are hundreds of MB, and I'm not allowed to change the web server's memory limits, but I can override the PHP memory limit on the command line.

acrylian

This topic is really old. Zenphoto features a cache_manager plugin that took over the older precache functionality.

acrylian

This topic is really old. Zenphoto features a cache_manager plugin that took over the older precache functionality.