G1 -> G2 map fails with blank page when destination album is hidden

Hopefully this isn't a repeat post. (I did search and try the various debugging steps. Honest.)

I'm working on migrating my content from G1 to G2 and I've found an odd quirk. My G1 to G2 maps work fine after I put the mod_rewrite rule in place under the G1 .htaccess - except where the destination album is hidden. If I un-hide it, the map works like a charm, but if the destination is hidden, I get a blank page.

Oddly, I don't see any error messages, at all, in the server logs. I turned on the debugging in config.php (set it to buffered) cleared my various caches - browser and database side - but still the same result. I even tried re-importing the content. If the destination album is hidden, blank page. No error, just blank.

Needless to say, I have some hidden content on the G1 instance that I want to auto-redirect to the G2 instance. Sadly, the system I'm testing on is not public and I'd like to avoid publicizing the URLs in question, although I can create a new hidden folder for testing if you like.

Thanks for any help you can offer,

Adam Benjamin

Gallery version = 2.3 core 1.3.0
API = Core 7.54, Module 3.9, Theme 2.6, Embed 1.5
PHP version = 5.2.9 apache2handler
Webserver = Apache/2.2.11 (Fedora)
Database = mysqli 5.0.84, lock.system=flock
Toolkits = ArchiveUpload, Exif, Ffmpeg, Getid3, ImageMagick, LinkItemToolkit, NetPBM, Thumbnail, Dcraw
Acceleration = none, none
Operating system = Linux pistol.midnightclear.org 2.6.27.30-170.2.82.fc10.i686 #1 SMP Mon Aug 17 08:38:59 EDT 2009 i686
Default theme = carbon
gettext = enabled
Locale = en_US
Browser = Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.13) Gecko/2009080317 Fedora/3.0.13-1.fc10 Firefox/3.0.13
Rows in GalleryAccessMap table = 8316
Rows in GalleryAccessSubscriberMap table = 2947
Rows in GalleryUser table = 2
Rows in GalleryItem table = 2945
Rows in GalleryAlbumItem table = 92
Rows in GalleryCacheMap table = 0

Sorry I didn't explain. The content that is hidden is in the G2 instance. (It is also hidden in the G1 instance - but that doesn't seem to be the determining factor here.) I'm putting the redirect (rewriting) rules in place for the G1 instance and leaving it be.

And I'm hiding the content in G2 using the hidden items plugin. (I'd forgotten that was a plugin in G2.) If the album is hidden, or its parent is hidden, the redirection from the G1 instance results in a blank page. If you unhide the content in G2, the redirection works fine.

Thanks for any guidance you can offer.

Sorry - not sure what you mean by PM'ing you. The rewriting rules I'm using are those provided within the G2 migration page. As for a sample URL, I'm working on a test version of of my G1/G2 instances which is on a home machine (ie. behind a firewall) rather than the public site - and as I haven't solved all the wrinkles, I haven't put the rewriting rules in place on the live site. I was hoping that anyone testing could recreate it via a trivial instance of both since it doesn't seem to be specific to my instances... but if it's really necessary, I can go to the effort of setting up new G1 and G2 instances to recreate the problem.

Sorry for the complications, and I greatly appreciate your considering the issue.

Sorry it took so long to provide an example. Here's the URL to the G1 gallery:

http://www.midnightclear.org/adam/gallery/Work-ish-Things

Here's the G2 album where it should redirect to:

http://www.midnightclear.org/adam/gallery2/v/Shutter-Clicks/Work-ish-Things/

Note that when the G2 album is NOT hidden, the redirection works, and the URL I see in my browser is this:

http://www.midnightclear.org/adam/gallery2/main.php?g2_itemId=44002

But when I hide the G2 album, the redirection results in a blank page - and no errors that I can see in any of the logs.

Let me know if you need more information.

In the .htaccess of the G1 gallery directory:

RewriteEngine On

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !gallery_remote2.php
RewriteRule (.*)$ /adam/gallery2/main.php?g2_controller=migrate.Redirect&g2_path=$1 [QSA]

I think what we're getting down to is there is possibly a bug in how this works with the Hidden Items plugin or because of technical issues in how the Hidden Items plugin works.

Ah, it's not a bug:

http://codex.gallery2.org/Gallery2:Modules:hidden

That's how that plugin works. You have to visit the album first, then you can visit the items.

After visiting the album, does the G1 redirection work properly? You may need to not have it hidden or instead of using the Hidden Items plugin, use Permissions and be forced to login. You may be able to use the password protected plugin as well to avoid creating user accounts for everyone you want to have access:
http://codex.gallery2.org/Gallery2:Modules:password
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One way to test.

Disable the hidden items plugin, then try accessing one of those G1 URLs
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G2 will still be supported. Just not enhanced.

I suspect it won't take long for community involvement for G3 to get 3rd party themes and modules up to the level or even surpassing G2.
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