[Tickets #8280] Horde caching Agora when it shouldn't be

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Ticket URL: http://bugs.horde.org/ticket/8280
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  Ticket             | 8280
  Created By         | simon at simonandkate.net
  Summary            | Horde caching Agora when it shouldn't be
  Queue              | Agora
  Version            | FRAMEWORK_3
  Type               | Bug
  State              | Unconfirmed
  Priority           | 1. Low
  Milestone          |
  Patch              |
  Owners             |
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simon at simonandkate.net (2009-05-14 20:57) wrote:

I installed Agora for comments in Ansel. That bit works fine. So do  
comments in Turba - in both of those I can add comments and they are  
immediately visible to all users. The MySQL tables show the posts and  
the "forums" - all good.

However, Horde incorrectly caches other Agora content, which is  
completely breaking it.

Horde is 3.3.4 rc1. Mysql backend, LDAP preferences store.  
$conf[cache][driver] set to use SQL.

I created a new forum "Welcome to the Forums". That appeared, and is  
visible. I added a thread to that forum. Navigate back to the root.  
The Forum is visible, but with no content (0 threads, 0 posts). A  
while later this screen actually updated to show 1 thread, 1 post.  
Clicking on the last post link took me to the post, so the post is  
there and the permissions are OK (I have not set any Horde Permissions  
on Agora). But clicking on the forum to enter it - it tells me "no  
threads". Same in Moderators. Add a moderator to the new Forum,  
submit, it works, adds it to the database, but Agora still shows "No  
Moderators have been created". Adding it again returns an error (cos  
it's already there).

What got really interesting was when I dropped the Agora tables and  
recreated them. In Ansel and Turba the comments disappeared (as  
expected). MySQL tables are all empty. Agora shows no forums. Yet  
adding a new forum in the Parent Forum drop-down is.... "Welcome to  
the Forums". In the add a moderator forum select drop down is...  
"Welcome to the forums" AND "19" which was what it called an Ansel  
comment 'forum'. Yet none of those are in MySQL any more.

If i tell Horde to not cache any objects ($conf[cache][driver]), the  
problem goes away.

I then tried setting $conf[cache][driver] to use memcache. Same  
problem. As soon as either memcache or sql caching is used, Agora  
breaks.