docs/magicword.txt

   1 magicword.txt
   2
   3 Magic Words are some phrases used in the wikitext. They are used for two things:
   4 * Variables (like {{PAGENAME}}, {{SERVER}}, ...): part of wikitext, that looks
   5   like templates but that don't accept any parameter.
   6 * Parser functions (like {{fullurl:...}}, {{#special:...}}): behaves like
   7   functions and accepts parameters.
   8
   9 The localized arrays keys are the internal name, and the values are an array,
  10 whose include their case-sensitivity and their alias forms. The first form
  11 defined is used by the program, for example, when moving a page and its old name
  12 should include #REDIRECT.
  13
  14 They can be added in several arrays:
  15 * LanguageGetMagic hook, by adding a new key in $magicWords array. You can get
  16   language code in the $lang parameter. Use both the localized name and the
  17   English name.
  18 * By adding a file to $wgExtensionMessagesFiles and defining there $magicWords.
  19   This array is associative with the language code in the first dimension key
  20   and then a "normal" array of magic words.
  21 * Localized arrays (languages/messages/LanguageXX.php) include their different
  22   names to be used by the users.
  23
  24 To add a new variable, you should use the "MagicWordwgVariableIDs" hook to add
  25 the internal name to the $magicWords array. You'll need to define the value of
  26 the variable with the "ParserGetVariableValueSwitch" hook.
  27
  28 For example to add a new variable:
  29
  30 $wgHooks['MagicWordwgVariableIDs'][] = 'wfAddCustomMagicWordID';
  31 $wgHooks['LanguageGetMagic'][] = 'wfAddCustomMagicWordLang';
  32 $wgHooks['ParserGetVariableValueSwitch'][] = 'wfGetCustomMagicWordValue';
  33
  34 function wfAddCustomMagicWordID( &$magicWords ) {
  35         $magicWords[] = 'mag_custom';
  36         return true;
  37 }
  38
  39 function wfAddCustomMagicWordLang( &$magicWords, $langCode ) {
  40         switch ( $langCode ) {
  41                 case 'es':
  42                         $magicWords['mag_custom'] = array( 1, "ADUANERO", "CUSTOM" );
  43                         break;
  44                 default:
  45                         $magicWords['mag_custom'] = array( 1, "CUSTOM" );
  46         }
  47         return true;
  48 }
  49
  50 function wfGetCustomMagicWordValue( &$parser, &$varCache, &$index, &$ret ){
  51         if( $index == 'mag_custom' ){
  52                 $ret = $varCache['mag_custom'] = "Custom value";
  53         }
  54         return true;
  55 }
  56
  57 And to add a new parser function:
  58
  59 $wgHooks['LanguageGetMagic'][] = 'wfAddCustomMagicWordLang';
  60 $wgHooks['ParserFirstCallInit'][] = 'wfRegisterCustomMagicWord';
  61
  62 function wfAddCustomMagicWordLang( &$magicWords, $langCode ) {
  63         switch ( $langCode ) {
  64                 case 'es':
  65                         $magicWords['mag_custom'] = array( 0, "aduanero", "custom" );
  66                         break;
  67                 default:
  68                         $magicWords['mag_custom'] = array( 0, "custom" );
  69         }
  70         return true;
  71 }
  72
  73 function wfRegisterCustomMagicWord( &$parser ){
  74         $parser->setFunctionHook( 'mag_custom', 'wfGetCustomMagicWordValue' );
  75         return true;
  76 }
  77
  78 function wfGetCustomMagicWordValue( &$parser, $var1, $var2 ){
  79         return "custom: var1 is $var1, var2 is $var2";
  80 }
  81
  82 Note: the 'ParserFirstCallInit' hook is only aviable since 1.12. To work with
  83 an older version, you'll need to use an extension function.
  84
  85 Online documentation (contains more informations):
  86 Magic words: http://www.mediawiki.org/wiki/Manual:Magic_words
  87 Variables: http://www.mediawiki.org/wiki/Manual:Variable
  88 Parser functions: http://www.mediawiki.org/wiki/Manual:Parser_functions