How I can update table in DB, with use function findOrNew I want first check column in table. If I have same title not add, if I dont have - push I campare @title@ in table DB.
public function update(Request $request, $id)
{$news = News::findOrNew($request->title);
if($news->title==$request->title){
}else{
$news->'title'=$request->input('title');
};
}
Welcome to SO ... I think you are looking for firstOrNew not findOrNew which is used for searching on the primary key specifically.
$news = News::firstOrNew(['title' => $request->input('title')]);
$news will be the existing record that has a 'title' that matches the request input or it will be a new instance with the 'title' set to the value you were searching for.