faq-bundle/src/Resources/contao/models/FaqModel.php
public static function findPublishedByParentAndIdOrAlias($varId, $arrPids, array $arrOptions=array())
	{
		if (empty($arrPids) || !\is_array($arrPids))
		{
			return null;
		}

		$t = static::$strTable;
		$arrColumns = !preg_match('/^[1-9]\d*$/', $varId) ? array("$t.alias=?") : array("$t.id=?");
		$arrColumns[] = "$t.pid IN(" . implode(',', array_map('\intval', $arrPids)) . ")";

		if (!static::isPreviewMode($arrOptions))
		{
			$arrColumns[] = "$t.published='1'";
		}

		return static::findOneBy($arrColumns, $varId, $arrOptions);
	}
public static function findPublishedByParentAndIdOrAlias($varId, $arrPids, array $arrOptions=array())
	{
		if (empty($arrPids) || !\is_array($arrPids))
		{
			return null;
		}

		$t = static::$strTable;
		$arrColumns = !preg_match('/^[1-9]\d*$/', $varId) ? array("$t.alias=?") : array("$t.id=?");
		$arrColumns[] = "$t.pid IN(" . implode(',', array_map('\intval', $arrPids)) . ")";

		if (!static::isPreviewMode($arrOptions))
		{
			$arrColumns[] = "$t.published='1'";
		}

		return static::findOneBy($arrColumns, $varId, $arrOptions);
	}
Find a published FAQ from one or more categories by its ID or alias

@param mixed $varId      The numeric ID or alias name
@param array $arrPids    An array of parent IDs
@param array $arrOptions An optional options array

@return FaqModel|null The model or null if there is no FAQ