Interlanguage links not appearing on Flow pages
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	The_Discoverer
	Mar 12 2017, 9:55 AM

Description

The interlanguage links (links on the left sidebar to pages on the same topic in other languages) are not appearing on pages where the content model is Flow, even when the corresponding Wikidata item has linked pages on other wikis.

Examples:
https://gom.wikipedia.org/wiki/विकिपीडिया:Tinto
https://ca.wikipedia.org/wiki/Viquipèdia:La_taverna/Tecnicismes
https://pl.wikipedia.org/wiki/Pomoc:Pytania_nowicjuszy
https://zh.wikipedia.org/wiki/Wikipedia:%E7%9F%A5%E8%AF%86%E9%97%AE%E7%AD%94
https://www.mediawiki.org/wiki/Project:Support_desk

Details

	Subject	Repo	Branch	Lines +/-
	Make BoardContent::getParserOutput call the "ContentAlterParserOutput" hook	mediawiki/extensions/Flow	master	+4 -0

Customize query in gerrit

Event Timeline

The_Discoverer created this task.Mar 12 2017, 9:55 AM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptMar 12 2017, 9:55 AM

Liuxinyu970226 added projects: StructuredDiscussions, Wikidata, Wikimedia-Interwiki-links.Mar 12 2017, 11:29 AM

Restricted Application added a project: Collaboration-Team-Triage. · View Herald TranscriptMar 12 2017, 11:29 AM

Liuxinyu970226 awarded a token.Mar 12 2017, 11:29 AM

Liuxinyu970226 subscribed.

I'm guessing this is probably a bug in how Wikidata injects these language links? If it turns out to be a bug in Flow, or if Flow turns out to do something unhelpful, please do let us know.

Lydia_Pintscher moved this task from incoming to needs discussion or investigation on the Wikidata board.Mar 23 2017, 2:22 PM

Lydia_Pintscher added subscribers: aude, hoo.

Lydia_Pintscher triaged this task as Medium priority.Jun 11 2017, 5:47 PM

Liuxinyu970226 updated the task description. (Show Details)Aug 30 2017, 1:45 PM

Restricted Application added a subscriber: Stang. · View Herald TranscriptAug 30 2017, 1:45 PM

Shizhao added a project: Chinese-Sites.Aug 30 2017, 1:56 PM

Liuxinyu970226 updated the task description. (Show Details)Sep 4 2017, 10:37 AM

I looked into this a bit:

The langlinks table is empty:

mysql:wikiadmin@db1078 [gomwiki]> SELECT * FROM langlinks WHERE ll_from = 7451;
Empty set (0.00 sec)

The language links of the ParserOutput are also empty:

hoo@terbium:~$ mwscript eval.php --wiki gomwiki 
> $wikiPage = new WikiPage( Title::newFromID(7451) );

> $popts = ContentHandler::getForTitle( Title::newFromID(7451) )->makeParserOptions( 'canonical' );    

> var_dump( $wikiPage->getParserOutput( $popts ) );
…
  ["mLanguageLinks"]=>
  array(0) {
  }
…

Wikibase is enabled for the NS in question:

hoo@terbium:~$ mwscript eval.php --wiki gomwiki
> var_dump( Wikibase\Client\WikibaseClient::getDefaultInstance()->getNamespaceChecker()->isWikibaseEnabled( Title::newFromID(7451)->getNamespace() ) );
bool(true)

useRepoLinks is true:

hoo@terbium:~$ mwscript eval.php --wiki gomwiki
> $popts = ContentHandler::getForTitle( Title::newFromID(7451) )->makeParserOptions( 'canonical' );

> $wikiPage = new WikiPage( Title::newFromID(7451) );

> $out = $wikiPage->getParserOutput( $popts );

> var_dump( Wikibase\Client\WikibaseClient::getDefaultInstance()->getLangLinkHandler()->useRepoLinks( Title::newFromID(7451), $out ) );
bool(true)

The problem is that Wikibase uses the ContentAlterParserOutput hook to inject the language links, but Flow doesn't call that. Will fix.

Change 379294 had a related patch set uploaded (by Hoo man; owner: Hoo man):
[mediawiki/extensions/Flow@master] Make BoardContent::getParserOutput call the "ContentAlterParserOutput" hook

https://gerrit.wikimedia.org/r/379294

gerritbot added a project: Patch-For-Review.Sep 20 2017, 6:39 PM

Change 379294 merged by jenkins-bot:
[mediawiki/extensions/Flow@master] Make BoardContent::getParserOutput call the "ContentAlterParserOutput" hook

https://gerrit.wikimedia.org/r/379294

ReleaseTaggerBot added a project: MW-1.31-release-notes (WMF-deploy-2017-11-28 (1.31.0-wmf.10)).Nov 16 2017, 2:00 PM

Update, after my Flow patch got merged:

The langlinks table is still empty:

mysql:wikiadmin@db1078 [gomwiki]> SELECT * FROM langlinks WHERE ll_from = 7451;
Empty set (0.00 sec)

But the language links in the ParserOutput aren't:

hoo@terbium:~$ mwscript eval.php --wiki gomwiki 
> $wikiPage = new WikiPage( Title::newFromID(7451) );

> $popts = ContentHandler::getForTitle( Title::newFromID(7451) )->makeParserOptions( 'canonical' );    

> var_dump( $wikiPage->getParserOutput( $popts ) );
…
  ["mLanguageLinks"]=>
  array(224) {
    [0]=>
    string(36) "ab:Авикипедиа:Афорум"
    [1]=>
    string(22) "ace:Wikipedia:Meusapat"
    [2]=>
…
  }
…

After that I purged with forcelinksupdate and even removed the link on Wikidata and re-added it, but this still didn't help, the langlinks still don't make it into the DB.

hoo removed a project: Patch-For-Review.Jan 21 2018, 10:19 AM

Restricted Application added a project: Growth-Team. · View Herald TranscriptSep 2 2018, 11:25 PM

Liuxinyu970226 removed a project: Collaboration-Team-Triage.Dec 7 2018, 7:16 AM

Bugreporter closed this task as a duplicate of T78434: Interwiki links don't update in a Flow page (reported by Catalan).Jul 4 2019, 12:11 PM

Restricted Application removed a subscriber: Liuxinyu970226. · View Herald TranscriptJul 4 2019, 12:11 PM

Shizhao moved this task from Backlog to Closed on the Chinese-Sites board.Jul 15 2019, 6:19 AM

Stang unsubscribed.Nov 2 2021, 11:39 PM

Interlanguage links not appearing on Flow pagesClosed, DuplicatePublicActions

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Interlanguage links not appearing on Flow pages
Closed, DuplicatePublic
Actions