How to manually set the value of an empty field during Request::flash() in Laravel?

Question

Laravel

Good night, comrades. The crux of the issue is in the title. Who will tell?
There is a form, title and alias. If the alias is not specified, then it is formed from the header. But if an error occurs in a field with an alias (for example, the generated alias from the header is already taken and you need to say about it), only the header is in Request::old, and this is reasonable, because we did not send the alias, or rather sent it empty. So the question is, how can I do so that I can expand the output of old ()? And is it real?
Thanks to!

Answer 1

The withInput method of the RedirectResponse class accepts an array, where you can pass a combined array of all input fields + the value you need.
Or via Session::flash, but then when outputting the input, you will need to manually check for the presence of this value in the session.