How to access session in twig?

Question

I wondering how to access to session in twig ?

In my Controller I have this part of code :

   $tempstore = \Drupal::service('user.private_tempstore')->get('mdm_user');
   $tempstore->set('num_donateur', $num_donateur);

I tried to display the session in my twig template :

  {% set mdm_session = app.session.get('mdm_user') %}
  {{ dump(mdm_session) }}

But nothing is displayed. Even session is inaccessible.

  {{ dump(session) }}

Any help would be appreciated.

Answer 1

Try this:

{% set varname = app.session.get('varname') %}

This is the session value {{varname}}

Answer 2

I would suggest you to firstly check if the data is stored in num_donateur variable successfully using $tempstore->get('num_donateur')

If not stored then try to save it using \Drupal::service('tempstore.private'), As i have just googled it and seen user.private_tempstore is deprecated [ https://www.drupal.org/project/entity/issues/2951683 ]

If data is stored successfully then use code to print the variable

{% set mdm_session = app.session.get('mdm_user') %} {{ mdm_session }}