BeforeIndex

handler function(
	array arFields
);

"BeforeIndex" event is called prior to indexing of an element by the CSearch::Index method.

Parameters

This handler can modify fields of the arFields parameter and must return it as the result.

Important

• If SITE_ID field is modified in any way within the handler, it's important to remember that indexes in the array must start from zero and with a sequence order. Otherwise the array will be deemed as associative and the elements will associate with sites incorrectly (digits will replace SITE_ID and elements will disappear from the search).
  
  
• To avoid adding an index entry (for example, if a subsection of information block must not be indexed), the following must be executed in the handler function:
  

  unset($arFields["BODY"]);
  unset($arFields["TITLE"]);
  

• If the following types of checks are executed:
  

  $bTitle = array_key_exists("TITLE", $arFields);
  $bBody = array_key_exists("BODY", $arFields);
  if($bTitle && $bBody && strlen($arFields["BODY"])<=0 && strlen($arFields["TITLE"])<=0)
  

  then to exclude an element from the index, the following must be executed:
  

  $arFields["BODY"]='';
  $arFields["TITLE"]='';
  

See Also

• CSearch::Index

Example of handler function:

<?
// file /bitrix/php_interface/init.php
// register the handler 
AddEventHandler("search", "BeforeIndex", Array("MyClass", "BeforeIndexHandler"));

class MyClass
{
    // create event handler "BeforeIndex"
    function BeforeIndexHandler($arFields)
    {
	if($arFields["MODULE_ID"] == "iblock" && $arFields["PARAM2"] == 33)
	{
		if(array_key_exists("BODY", $arFields))
		{
			$arFields["BODY"] .= " the hottest news";
		}
	}
	return $arFields;
    }
}
?>

Example of handler function use:

Example of using handler function, for the search.title component to execute search not only by titles, but by some property:

// register the handler
AddEventHandler("search", "BeforeIndex", "BeforeIndexHandler");
 // create event handler "BeforeIndex"
public static function BeforeIndexHandler($arFields)
{
   if(!CModule::IncludeModule("iblock")) // connect the module
      return $arFields;
   if($arFields["MODULE_ID"] == "iblock")
   {
      $db_props = CIBlockElement::GetProperty(                        // Request properties of indexed element
                                    $arFields["PARAM2"],         // BLOCK_ID of indexed property
                                    $arFields["ITEM_ID"],          // ID of indexed property
                                    array("sort" => "asc"),       // Sorting (can be skipped)
                                    Array("CODE"=>"CML2_ARTICLE")); // property CODE (in this case, article)
      if($ar_props = $db_props->Fetch())
         $arFields["TITLE"] .= " ".$ar_props["VALUE"];   // add a property to the end of a indexed element title
   }
   return $arFields; // return the implemented modifications
}