jpostlethwaite wrote:

The exception:

internal_api_error_MWException

Exception Caught: Internal error in ApiResult::setElement: Bad parameter

jpostlethwaite wrote:

The stack trace:

#0 /usr/local/apache/common-local/php-1.18/includes/api/ApiBase.php(1255): wfDebugDieBacktrace('Internal error ...')
#1 /usr/local/apache/common-local/php-1.18/includes/api/ApiResult.php(149): ApiBase::dieDebug('ApiResult::setE...', 'Bad parameter')
#2 /usr/local/apache/common-local/php-1.18/includes/api/ApiResult.php(180): ApiResult::setElement(Array, '*', NULL)
#3 /usr/local/apache/common-local/php-1.18/includes/api/ApiParse.php(282): ApiResult::setContent(Array, NULL)
#4 /usr/local/apache/common-local/php-1.18/includes/api/ApiMain.php(692): ApiParse->execute()
#5 /usr/local/apache/common-local/php-1.18/includes/api/ApiMain.php(358): ApiMain->executeAction()
#6 /usr/local/apache/common-local/php-1.18/includes/api/ApiMain.php(342): ApiMain->executeActionWithErrorHandling()
#7 /usr/local/apache/common-local/php-1.18/api.php(115): ApiMain->execute()
#8 /usr/local/apache/common-local/live-1.5/api.php(3): require('/usr/local/apac...')
#9 {main}

jpostlethwaite wrote:

Narrowed down the request:

/w/api.php?action=parse&format=xml&title=Kanichar&prop=wikitext

This still generates the exception.

Links for the lazy:
http://en.wikipedia.org/wiki/Kanichar

http://en.wikipedia.org/w/api.php?action=parse&format=xmlfm&title=Kanichar&prop=wikitext

Replicable on trunk (exported article and dependant pages into my dev wiki)

<?xml version="1.0"?>
<api servedby="ubuntu64-web-esxi">

<error code="internal_api_error_MWException" info="Exception Caught: Internal error in ApiResult::setElement: Bad parameter" xml:space="preserve">

#0 /home/reedy/mediawiki/trunk/phase3/includes/api/ApiBase.php(1300): wfDebugDieBacktrace('Internal error ...')
#1 /home/reedy/mediawiki/trunk/phase3/includes/api/ApiResult.php(144): ApiBase::dieDebug('ApiResult::setE...', 'Bad parameter')
#2 /home/reedy/mediawiki/trunk/phase3/includes/api/ApiResult.php(175): ApiResult::setElement(Array, '*', NULL)
#3 /home/reedy/mediawiki/trunk/phase3/includes/api/ApiParse.php(278): ApiResult::setContent(Array, NULL)
#4 /home/reedy/mediawiki/trunk/phase3/includes/api/ApiMain.php(706): ApiParse->execute()
#5 /home/reedy/mediawiki/trunk/phase3/includes/api/ApiMain.php(361): ApiMain->executeAction()
#6 /home/reedy/mediawiki/trunk/phase3/includes/api/ApiMain.php(345): ApiMain->executeActionWithErrorHandling()
#7 /home/reedy/mediawiki/trunk/phase3/api.php(117): ApiMain->execute()
#8 {main}

</error>
</api>

wikitext is indeed the bad paramter, line 278 is the $result->setContent()

		if ( isset( $prop['wikitext'] ) ) {
			$result_array['wikitext'] = array();
			$result->setContent( $result_array['wikitext'], $this->text );
			if ( !is_null( $this->pstText ) ) {
				$result_array['psttext'] = array();
				$result->setContent( $result_array['psttext'], $this->pstText );
			}
		}

Happens on many pages, $this->text is null

Actually, it was broken in the very revision prop=wikitext was introduced, r81124.

(In reply to comment #7)

Actually, it was broken in the very revision prop=wikitext was introduced,
r81124.

Trololol. I have a fix, just not sure if it's the best

Actually, you shouldn't be using Title in this case

You want page

'title' => 'Title of page the text belongs to',
'page' => "Parse the content of this page. Cannot be used together with {$p}text and {$p}title",

http://en.wikipedia.org/w/api.php?action=parse&format=xmlfm&page=Kanichar&prop=wikitext

Title is so you can "create" a page, and use that as the title against arbitary text

If you do that properly, then

http://en.wikipedia.org/w/api.php?action=parse&format=xmlfm&title=FooBarLolBaz&prop=wikitext&text=[[Boo]]

r109693

Related URL: https://gerrit.wikimedia.org/r/63138 (Gerrit Change I03c1fbcb0bd31dea8bd84e164104f7ced0ace449)