Laravel 5 中不发送会话变量

Question

I have a Laravel Application, and something strange is happening related to the session variables. I have a method in a controller that checks some inputs and depending of some conditions it decides if continues or just return back (and right here where is my problem), when I make return redirect()->back() I want so send a variable that is a Json, so briefly I have this:

$msg=json_encode([
     'status' => 'failed',
     'field'=>'mail'
 ]);
return redirect()->back()->with('msg',$msg);

So, it redirects very well, but then in the view I have:

@if ( Session::has('msg') )
   //come stuffs
@endif

But it seems likes the msg variable is not passed. According to the Laravel documentation when one uses redirect back the variables are accesible trough Session

Answer 1

Its' working for me when I tested. Maybe your session is not storing data. Please check whether your session is working or not. My tested output

   @if ( Session::has('msg') )
       {{ session('msg') }}
    @endif 

Answer 2

I also encountered this problem on a project a while back with Laravel 5.2. I don't know if it is a bug or whether it has been fixed but I ended up getting around it by not using redirect()->back() . I think it might be related to the browser's caching mechanism. I would be interested if you end up finding the cause.

Answer 3

I think you need to use $request->session()->put('key', 'value'); before you initiate the redirect

read the documentation at HTTP Session