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The handleCommonTags() handler might get called before all preference levels, i.e. read from the session object, are initialized. That's because the plugins are enabled before the session values are pushed in. See TWiki.pm lines 1191 and 1193. They are in the wrong order. The SESSION level needs to be initialized right after the TOPIC level.

Here's the proposed patch:

--- TWiki.pm    (revision 7706)
+++ TWiki.pm    (working copy)
@@ -1185,15 +1185,14 @@
         $this->{webName}, $this->{topicName}, 'TOPIC' );

+    $prefs->pushPreferenceValues( 'SESSION',
+                                  $this->{client}->getSessionValues() );
     $this->{renderer} = new TWiki::Render( $this );

     # Finish plugin initialization - register handlers

-    $prefs->pushPreferenceValues( 'SESSION',
-                                  $this->{client}->getSessionValues() );
     # language information; must be loaded after
     # *all possible preferences sources* are available
     $this->{i18n} = TWiki::I18N::get( $this );

Unfortunately the unit tests segfault on my debian/testing. Otherwise I would've checked that in already. Can someone do that, please, and see if it generates the same errors as before wink

Cairo and Beijing using the SessionPlugin behave just fine: a getPreferencesValue("FooBar") returns the session value before consulting the topic/web settings.

I made the change, and it seems OK, but please make sure you test around it before closing this.

SVN 7717


Works like a charm. Fixed.


Summary handleCommonTags() called before preferences are fully loaded
ReportedBy MichaelDaum

SVN Range Tue, 29 Nov 2005 build 7670
AppliesTo Engine

Priority Urgent
CurrentState Closed

Checkins 7717
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Topic revision: r6 - 2005-12-05 - MichaelDaum
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