How to save session declared in POST route?

Question

JavaScript

The session only works in the route within which it was declared.
I use Express-session, everything works fine in GET routes.
Cookie-Parser has the same problem.

router.post('/new/', (req,res,next) => {

  const data = {id: req.body.id, name: req.body.name}
 
   req.session.cart.newItem = data
   req.session.save()  
})

Answer 1

Try to return the response in the request handler and everything will be fine. You in your implementation 504 Gateway Timeout do.

router.post('/new/', (req,res,next) => {
  const data = {id: req.body.id, name: req.body.name};
  req.session.cart.newItem = data;
  res.status(200).send(true); // к примеру
})