How to rebuild preview thumbnails?

last247

Joined: 2009-09-29
Posts: 3
Posted: Tue, 2009-09-29 15:21

Hi there,

after having successfully uploaded several dozen pics into one album, i discovered that some of them needed a refining - lossless rotation. I have accomplished that outside of the tool, because it were so many, but now how do i rebuild the thumbnails? they still show the old, unadjusted version...

I have not yet discovered a solid method.

thank you for help!
 
last247

Joined: 2009-09-29
Posts: 3
Posted: Tue, 2009-09-29 16:18

I found a workaround - though not a solution really - over here: http://gallery.menalto.com/gallery_3.0_beta_1_feedback#comment-309493 which means you change your thumbnail size and then you get a status bar line asking you to perform a rebuild. Maybe there is a better solution? (At the end of the day, you have to run it twice to return to your original thumbnail size...)
 
floridave
floridave's picture

Joined: 2003-12-22
Posts: 22888
Posted: Wed, 2009-09-30 00:07

There will be a bulk tool for rotation and other tasks. There should be no need to 'rebuild' the thumbs as they are created durring upload and other internal operations. I don't think we will support 'outside of the tool', or external manual modifications.
A module could be developed to mark all images in a album 'dirty' and you will be prompted to build them though the admin interface. Similar to if you re-size the thumbs.

Dave
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griffinmt
griffinmt's picture

Joined: 2009-09-06
Posts: 128
Posted: Wed, 2009-09-30 03:58

I have done what Dave has indicated, setting the fields 'thumb_dirty' and/or 'resize_dirty' to the value of 1.
After doing that, you go to the Maintenance panel and it will indicate how many pictures need recreating.
Just click the Run button and sit back and wait. Mine takes about 1 second per picture (both thumb and resize images).

In fact I have about 4800 pics doing that right now, I'll leave it running over night.

If you do not have any tool to modify your MySQL database, you'll have to wait for the utility. If you do, but don't understand SQL or how to find things in the tables, I also recommend waiting.

Martyn T. Griffin
 
Drinyth

Joined: 2004-07-13
Posts: 8
Posted: Mon, 2009-10-05 21:28

I actually did just the above. I resized the default thumbnail size from 200 to 225 and recreated the thumbnails accordingly. I then tried to downsize back to 200, setting the 'thumb_dirty' flag in all the items in the MySQL DB to 1. Gallery did go through the process of recreating all the thumbnails (which I verified via timestamp), but did so with the 225 value instead of 200?

200 is the saved value in Settings -> Advanced -> thumb_size. I'm not sure what I'm missing or what else to try... short of wiping everything out and reimporting my G2 instance...
 
nivekiam
nivekiam's picture

Joined: 2002-12-10
Posts: 16503
Posted: Mon, 2009-10-05 21:50

Go to Admin > Appearance > Theme Options

EDIT: and change the setting there, if it's already changed there, change it again to something else.
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Drinyth

Joined: 2004-07-13
Posts: 8
Posted: Mon, 2009-10-05 22:10

Thanks. It was set to 200 there too? So I changed it to 225 and then changed it back to 200. Rebuilding a few thousand thumbnails at the moment. I'll let you know how it works out.

Thanks for the quick reply!
 
Drinyth

Joined: 2004-07-13
Posts: 8
Posted: Tue, 2009-10-06 07:22

Yep. That worked like a champ! Thanks for the suggestion!