Extension:PageCreator

MediaWiki extensions manual

PageCreator Release status: experimental
Implementation	Variable
Description	Provides variables for retrieving the creator of a page and the time stamp of page creation
Author(s)	User:Pierro78, PLX
Latest version	0.3 (2012-01-15)
MediaWiki	1.16+
Database changes	No
License	GPL
Download	see the code section
Hooks used LanguageGetMagic ParserGetVariableValueSwitch MagicWordwgVariableIDs
Translate the PageCreator extension if it is available at translatewiki.net
Check usage and version matrix.

The PageCreator extension provides two variables:

• {{PAGECREATOR}} which returns the page's creator user name
• {{CREATIONTIMESTAMP}} which returns the page's Creation TimeStamp.

Installation

• Copy the code into a file and place the file(s) in a directory called PageCreator in your extensions/ folder.

• Add the following code at the bottom of your LocalSettings.php:

  require_once "$IP/extensions/PageCreator/PageCreator.php";
  

•  Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.

Code

GetPageCreator.php

<?php

/**
 * Step 1: choose a magic word ID
 *
 * Storing the chosen ID in a constant is not required, but still good
 * programming practice - it makes searching for all occurrences of the magic
 * word ID a bit easier.
 * Note that the name of the constant and the value it is assigned don't have
 * to have anything to do with each other.
 */
define( 'PPP_PAGECREATOR', 'PAGECREATOR' );
define( 'PPP_CREATIONTIMESTAMP', 'CREATIONTIMESTAMP' );


 
/**
 * Step 2: define some words to use in wiki markup
 */
$wgHooks['LanguageGetMagic'][] = 'wfPppWikiWords';
function wfPppWikiWords( &$magicWords, $langCode ) {
        // tell MediaWiki that all {{NiftyVar}}, {{NIFTYVAR}}, {{CoolVar}},
        // {{COOLVAR}} and all case variants found in wiki text should be mapped to
        // magic ID 'mycustomvar1' (0 means case-insensitive)
        $magicWords[PPP_PAGECREATOR] = array( 0, PPP_PAGECREATOR);
        $magicWords[PPP_CREATIONTIMESTAMP] = array( 0, PPP_CREATIONTIMESTAMP);
 
        // must do this or you will silence every LanguageGetMagic hook after this!
        return true;
}
 
/**
 * Step 3: assign a value to our variable
 */
$wgHooks['ParserGetVariableValueSwitch'][] = 'wfPppAssignAValue';
function wfPppAssignAValue( &$parser, &$cache, &$magicWordId, &$ret ) {
        if ( PPP_PAGECREATOR == $magicWordId ) {
			global $wgUser;
			$revuser = $wgUser->getName();

		$ret = $revuser;
		
		global $wgArticle;

		if (isset($wgArticle))
                {
		  $myArticle=$wgArticle;
		}
		else
		{ 
		  $myTitle=$parser->getTitle();
		  $myArticle=new Article($myTitle);
		}

		$dbr = wfGetDB( DB_SLAVE );
		$revTable = $dbr->tableName( 'revision' );

		$pageId = $myArticle->getId();
		$q0 = "select rev_user_text from ".$revTable." where rev_page=".$pageId." order by rev_timestamp asc limit 1";
		if(($res0 = mysql_query($q0)) && ($row0 = mysql_fetch_object($res0)))
		{
		  $ret=$row0->rev_user_text;
// $ret= $magicWordId ;
	  	}
		else
		{
// try to print a little bit of debug info there
		  $myTitle=$parser->getTitle();
	          $articleId=$myTitle->getArticleID();
//		  $ret="pageId:".$pageId."-arcticleId:".$articleId."-getText:".$myTitle->getText()."-getFullText:".$myTitle->getFullText();
	        }
        }




        if ( PPP_CREATIONTIMESTAMP == $magicWordId ) {
			global $wgUser;
			$revuser = $wgUser->getName();

		$ret = $revuser;
		
		global $wgArticle;

		if (isset($wgArticle))
                {
		  $myArticle=$wgArticle;
		}
		else
		{ 
		  $myTitle=$parser->getTitle();
		  $myArticle=new Article($myTitle);
		}

		$dbr = wfGetDB( DB_SLAVE );
		$revTable = $dbr->tableName( 'revision' );

		$pageId = $myArticle->getId();
		$q0 = "select rev_timestamp from ".$revTable." where rev_page=".$pageId." order by rev_timestamp asc limit 1";
		if(($res0 = mysql_query($q0)) && ($row0 = mysql_fetch_object($res0)))
		{
		  $ret=$row0->rev_timestamp;
//$ret='coucou';
	  	}
		else
		{
// try to print a little bit of debug info there
		  $myTitle=$parser->getTitle();
	          $articleId=$myTitle->getArticleID();
//		  $ret="pageId:".$pageId."-arcticleId:".$articleId."-getText:".$myTitle->getText()."-getFullText:".$myTitle->getFullText();
	        }
        }




        // We must return true for two separate reasons:
        // 1. To permit further callbacks to run for this hook.
        //    They might override our value but that's life.
        //    Returning false would prevent these future callbacks from running.
        // 2. At the same time, "true" indicates we found a value.
        //    Returning false would the set variable value to null.
        //
        // In other words, true means "we found a value AND other
        // callbacks will run," and false means "we didn't find a value
        // AND abort future callbacks." It's a shame these two meanings
        // are mixed in the same return value.  So as a rule, return
        // true whether we found a value or not.
        return true;
}
 
/**
 * Step 4: register the custom variable(s) so that it shows up in
 * Special:Version under the listing of custom variables.
 */
$wgExtensionCredits['variable'][] = array(
        'name' => 'PageCreator',
        'author' => 'Pierro78',
        'version' => '0.3',
        'description' => 'Provides variables for retrieving the creator of a page an the time stamp of page creation',
        'url' => 'https://www.mediawiki.org/wiki/Extension:PageCreator',
);
 
/**
 * Step 5: register wiki markup words associated with
 *         PPP_PAGECREATOR as a variable and not some
 *         other type of magic word
 */
$wgHooks['MagicWordwgVariableIDs'][] = 'wfPppDeclareVarIds';
function wfPppDeclareVarIds( &$customVariableIds ) {
        // $customVariableIds is where MediaWiki wants to store its list of custom
        // variable IDs. We oblige by adding ours:
        $customVariableIds[] = PPP_PAGECREATOR;
        $customVariableIds[] = PPP_CREATIONTIMESTAMP;
 
        // must do this or you will silence every MagicWordwgVariableIds hook
        // registered after this!
        return true;
}