Use of Drupal TempStore API

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How to use Drupal TempStore API in application

TempStore API - A key/value storage to keep temporary data (private or shared) across page requests.
  • Set value using Drupal service private_tempstore:

  $tempstore = \Drupal::service('user.private_tempstore')->get('modulename');
  $tempstore->set('key', 'Value to set');
  • Get value using Drupal service private_tempstore: 

  $tempstore = \Drupal::service('user.private_tempstore')->get('modulename');
  $myKey = $tempstore->get('key');
  • By default it keep value stored a week long, while you can also delete value using delete function:

  $tempstore = \Drupal::service('user.private_tempstore')->get('modulename');
  $store->delete('key_name');

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