CodeGenerator::generateByTitle

protected function generateByTitle(string $title, int $try = 1): ?string
{
	if ($try >= static::MAX_NUMBER_OF_TRIES)
	{
		return null;
	}

	if ($try > 1)
	{
		//e.g. 'Not unique title 2'
		$title .= ' ' . $try;
	}

	$code = CUtil::translit(
		$title,
		Loc::getCurrentLang(),
		[
			'max_len' => $this->codeField->getSize(),
			'change_case' => true,
			'replace_space' => '_',
			'replace_other' => '',
			'delete_repeat_replace' => true,
			'safe_chars' => '',
		]
	);

	if ($this->isCodeShouldBeUnique() && !$this->isCodeUnique($code))
	{
		return $this->generateByTitle($title, $try + 1);
	}

	return $code;
}