How to assign value if not increment? laravel

Question

I want to assign a value if not exist else increment the value. Below is the one line code that I'm trying to achieve.

session()->put(['validation_count' => session('validation_count')++ ?? 1]);

But I end up this error below.

Can't use function return value in write context

Someone knows the perfect one line solution?

Omer YILMAZ · Accepted Answer · 2020-05-05T12:51:52.957

0

$validationCount = session('validation_count');
session()->put(['validation_count' =>  ($validationCount ? $validationCount++ : 1]);

Update for comment:

I recommend with variable usage but if you want to one line:

session ()->put ( ['validation_count' => ( session ( 'validation_count' ) ? session ( 'validation_count' ) + 1 : 1 )] );
session ()->save ();

edited May 05 '20 at 12:51

answered May 05 '20 at 12:32

Omer YILMAZ

updated answer returns error **Can't use function return value in write context** – charles May 05 '20 at 12:40
Please don't update or delete comment for other people. I updated again. Sorry my syntax mistake – Omer YILMAZ May 05 '20 at 12:46
Ok just add last line in my answer. – Omer YILMAZ May 05 '20 at 12:52
still stays in value 1 – charles May 05 '20 at 12:53
May be you have another mistake. Where are you using this? In controller? – Omer YILMAZ May 05 '20 at 12:53

Uzair Riaz · Answer 2 · 2020-05-05T12:41:48.940

0

In one line, you can do like so:

session()->put(['validation_count' => (session('validation_count') ? session('validation_count') + 1 : 1)]);

edited May 05 '20 at 12:41

answered May 05 '20 at 12:36

Uzair Riaz

I just edited it, there was a parentheses missing. It works for me. Try writing it twice and `var_dump(session('validation_count'))`, it should print 2. – Uzair Riaz May 05 '20 at 12:42
still always stays in value 1. please try your solution first before answering. – charles May 05 '20 at 12:43
I did try it, works for me. I wrote it twice and `dd` it and it shows 2. You might be doing something wrong. – Uzair Riaz May 05 '20 at 12:45
nope I `session()->all()` but the value still stays in 1 – charles May 05 '20 at 12:46

2 Answers2