php - Laravel 5 - session doesn't work

Question

Here's config/session.php:

return [
    'driver' => 'file',
    'files' => storage_path().'/framework/sessions',
];

My storage/framework/sessions have 755 permissions.

When I put these 2 line in my controller

Session::set('aa', 'bb');
dd(Session::get('aa'));

I receive expected "bb" output. But if I comment first line:

// Session::set('aa', 'bb');
dd(Session::get('aa'));

and refresh page, I still expecting "bb" but getting null.

Also, storage/framework/sessions is empty.

What should I do to make Session working?

Answer 1

Laravel 5 handles sessions via a middleware class called StartSession. More importantly, this middleware is a TerminableMiddleware and the code that actually saves the data (in your case to the session file) is located in the terminate method, which is run at the end of the request lifecycle:

public function terminate($request, $response)
{
    if ($this->sessionHandled && $this->sessionConfigured() && ! $this->usingCookieSessions())
    {
        $this->manager->driver()->save();
    }
}

When calling dd(Session::get('aa')); the request is being interrupted before the terminate method of the middleware can be called.

Funnily enough, the Laravel Middleware Documentation actually explains Terminable Middleware logic by giving the Laravel StartSession middleware as an example:

For example, the "session" middleware included with Laravel writes the session data to storage after the response has been sent to the browser.

That being said, try using var_dump() instead of using dd().