QueryPage class help? - Wikitech-l

5 Dec 2011

Is there any documentation on using the QueryPage class in an extension? I'd like to
create a special page with the QueryPage features but am running into problems
"hooking it up" to run. I don't see any QueryPage docs on mediawiki.org or
meta.  (Or is there a more modern way to get a paging Special Page?)

First I defined my subclass of QueryPage with some dummy methods:

class MyQueryPageClassName extends QueryPage {
  function getName() { return 'My Query Page'; }
  function getSQL() { return "select 1 as 'test'"; }
  function formatResult() { return 'dummy result'; }
}

Then I hooked up my page with:

$wgHooks['wgQueryPages'][] = 'wfMyQueryPages';
function wfMtQueryPages(&$wgQueryPages) {
  $wgQueryPages[] = array('MyQueryPageClassName', 'MyQueryPage');
  return true;
}

At this point, the special page does not exist on the wiki. What else needs to be done to
make this work?

I looked at SpecialPopularpages.php and see a global function wfSpecialPopularpages() at
the end that looks necessary, but I don't see anything that calls it in the code. How
does this really work? I created my own version but nothing seems to call it.

/**
 * Constructor
 */
function wfMyQueryPage() {
  list( $limit, $offset ) = wfCheckLimits();
  $ppp = new MyQueryPageClassName();
  return $ppp->doQuery( $offset, $limit );
}

Any help appreciated.

Thanks,
DanB