Semantic MediaWiki:4.0.2 and Wikibase REL1_39

[zampaleu]

I was trying to run Wikibase and SMW together, but it does not work .

It was working with previous version of SMW and Wikibase with this setting:

$wgExtraNamespaces[WB_NS_PROPERTY] = 'wb/property';
$wgExtraNamespaces[WB_NS_PROPERTY_TALK] = 'wb/property_talk';

Are some changes or new settings ?

[JeroenDeDauw]

What does not work?

[zampaleu]

[65fbe57470886b60bb71e1f7] /mediawiki/index.php/Special:NewProperty MediaWiki\Page\PageAssertionException: The given PageIdentity Special:Badtitle/NS122:NewProperty does not represent a proper page

Backtrace:

from /var/www/mediawiki/includes/page/WikiPageFactory.php(57)
#0 /var/www/mediawiki/extensions/Wikibase/repo/includes/EditEntity/MediawikiEditFilterHookRunner.php(142): MediaWiki\Page\WikiPageFactory->newFromTitle()
#1 /var/www/mediawiki/extensions/Wikibase/repo/includes/EditEntity/MediawikiEditFilterHookRunner.php(80): Wikibase\Repo\EditEntity\MediawikiEditFilterHookRunner->getContextForEditFilter()
#2 /var/www/mediawiki/extensions/Wikibase/repo/includes/EditEntity/StatsdTimeRecordingEditFilterHookRunner.php(47): Wikibase\Repo\EditEntity\MediawikiEditFilterHookRunner->run()
#3 /var/www/mediawiki/extensions/Wikibase/repo/includes/EditEntity/MediawikiEditEntity.php(748): Wikibase\Repo\EditEntity\StatsdTimeRecordingEditFilterHookRunner->run()
#4 /var/www/mediawiki/extensions/Wikibase/repo/includes/EditEntity/StatsdSaveTimeRecordingEditEntity.php(77): Wikibase\Repo\EditEntity\MediawikiEditEntity->attemptSave()
#5 /var/www/mediawiki/extensions/Wikibase/repo/includes/Specials/SpecialWikibaseRepoPage.php(194): Wikibase\Repo\EditEntity\StatsdSaveTimeRecordingEditEntity->attemptSave()
#6 /var/www/mediawiki/extensions/Wikibase/repo/includes/Specials/SpecialNewEntity.php(167): Wikibase\Repo\Specials\SpecialWikibaseRepoPage->saveEntity()
#7 /var/www/mediawiki/includes/htmlform/HTMLForm.php(725): Wikibase\Repo\Specials\SpecialNewEntity->Wikibase\Repo\Specials{closure}()
#8 /var/www/mediawiki/includes/htmlform/HTMLForm.php(615): HTMLForm->trySubmit()
#9 /var/www/mediawiki/extensions/Wikibase/repo/includes/Specials/SpecialNewEntity.php(111): HTMLForm->tryAuthorizedSubmit()
#10 /var/www/mediawiki/includes/specialpage/SpecialPage.php(701): Wikibase\Repo\Specials\SpecialNewEntity->execute()
#11 /var/www/mediawiki/includes/specialpage/SpecialPageFactory.php(1428): SpecialPage->run()
#12 /var/www/mediawiki/includes/MediaWiki.php(316): MediaWiki\SpecialPage\SpecialPageFactory->executePath()
#13 /var/www/mediawiki/includes/MediaWiki.php(904): MediaWiki->performRequest()
#14 /var/www/mediawiki/includes/MediaWiki.php(562): MediaWiki->main()
#15 /var/www/mediawiki/index.php(50): MediaWiki->run()
#16 /var/www/mediawiki/index.php(46): wfIndexMain()
#17 {main}

[JeroenDeDauw]

The error comes from Wikibase. Presumably, something changed in the new Wikibase version you are using. So not an SMW issue.

[zampaleu]

possible.. for me it is a problem with the mix of namespaces used by the extensions. but thanks anyway

[harshiteuro]

I am facing the same issue while trying Wikibase with SemanticMediawiki, I am using the follwing configuration-

MediaWiki | 1.38.5
Semantic MediaWiki | 4.1.0
WikibaseClient | – | GPL-2.0-or-later | Client for the Wikibase extension | The Wikidata team and others
WikibaseRepository | – | GPL-2.0-or-later | Structured data repository | The Wikidata team and others

for namespace conf. i am using

//to fix-Both extension Wikibase and Semantic MediaWiki add a namespace called "Property"
// $wgExtensionFunctions[] = function() {
// $GLOBALS['wgExtraNamespaces'][SMW_NS_PROPERTY] = 'smw/property';
// $GLOBALS['wgExtraNamespaces'][SMW_NS_PROPERTY_TALK] = 'smw/property_talk';
// };
// $wgExtensionFunctions[] = function() {
// $GLOBALS['wgExtraNamespaces'][SMW_NS_PROPERTY] = 'SemanticProperty';
// $GLOBALS['wgExtraNamespaces'][SMW_NS_PROPERTY_TALK] = 'SemanticProperty_talk';
// };

// extra permissions to avoid getting errors when creating new items or properties
// $wgGroupPermissions['user']['item-create'] = true;

@zampaleu can you assist me how you cope with this issue.

[baillyk]

You need to change the canonicalNames of the SMW Namespace property (e.g. to smw/property) in the SMW File extensions/SemanticMediaWiki/src/NamespaceManager.php.

The reason is, that the function getCanonicalNames() delivers hardcoded namespace names in newer versions that are not affected by setting the above wgExtraNamespaces config.
When a property is created, it is checked if the namespace exists. but smw will delete every namespace that conflicts with the canonicalnames. thus it deletes the wikibase namespace "property" and its corresponding id is no longer a valid page.

Solution:
change the function to something like this:

public static function getCanonicalNames() {
$canonicalNames = [
SMW_NS_PROPERTY => 'smw/Property',
SMW_NS_PROPERTY_TALK => 'smw/Property_talk',
SMW_NS_CONCEPT => 'smw/Concept',
SMW_NS_CONCEPT_TALK => 'smw/Concept_talk',
SMW_NS_SCHEMA => 'smw/schema',
SMW_NS_SCHEMA_TALK => 'smw/schema_talk',
SMW_NS_RULE => 'smw/Rule',
SMW_NS_RULE_TALK => 'smw/Rule_talk'
];

	return $canonicalNames;
}

[Nikerabbit]

I'm using this code for 1.41 in LocalSettings.php:

// Avoid conflict with SMW namespaces. This hook needs to execute last.
$wgHooks['CanonicalNamespaces'][] = static function ( &$list ) {
        global $wgExtraNamespaces;
        $wgExtraNamespaces[WB_NS_PROPERTY] = $list[WB_NS_PROPERTY] = 'Wikibase_property';
        $wgExtraNamespaces[WB_NS_PROPERTY_TALK] = $list[WB_NS_PROPERTY_TALK] = 'Wikibase_property_talk';
};