如何使用symfony 4使Controller无效

Question

My application is being migrated from symfony 3 to symfony 4, I dont know whether this is a symfony 4 bug or not.

Im using a rest api that uses a controller which creates and removes a session.

when I create a session and set a variable.

$session = new Session(); // or $this->get("session") 
$session->start();
$session->set("key", "value");

and try to invalidate the sesssion. (Ive tried all of these)

$session = new Session();
$session->invalidate(1);
$session->clear();

$this->get("session")->invalidate(1);

$request->getSession()->invalidate(1);

the value can still get accessed with the get method. e.g with

$request->getSession()->get("key");

Also the services to set the token to null and not available anymore.

Answer 1

First get the currently existing session

$session = $this->get('session');

To set a variable:

$session->set('key', 'value');

To clear all variables:

$session->clear();

To invalidate the session

$session->invalidate();

When I then do

var_dump($request->getSession()->get("key"));

it returns null

I guess the problem is that you set $session twice

$session = new Session();

$session->set('key', 'value');

$session = new Session();

$session->invalidate(1);

var_dump($request->getSession()->get("key"));

This returns string 'value' while

$session = new Session();

$session->set('key', 'value');

$session->invalidate(1);

var_dump($request->getSession()->get("key"));

returns null