public function getUnUsedLanguageList($pageId, $languages)
{
$existingLangages = $this->Page->where(function ($query) use($pageId) {
$query->where('id', $pageId)->orWhere('translated_from_page_id', $pageId);
})->lists('title', 'language_id');
return array_diff_key($languages, $existingLangages->toArray());
}