4

I am doing a module in drupal 8, I would like to know how to execute a function automatically every month. I think it's done with Cron, but I only get to do it every week. as I edit it from my function.

closed as unclear what you're asking by Kevin, Pierre.Vriens, mradcliffe, DRUPWAY, Chapabu Mar 29 '18 at 0:56

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • please revise your question it is not clear what you want to do ... – GiorgosK Mar 27 '18 at 22:53
6

A modified example from cron_example module. This doesn't concern the interval the cron tasks are set in cron.

This is important, as you will probably set another cron tasks sooner or latter with different interval requirements. Also, many system tasks require more frequent cron runs.

function cron_example_cron() {
  $interval = 30*24*60*60; // Approx a month of interval

  // We usually don't want to act every time cron runs (which could be every
  // minute) so keep a time for the next run in the site state.
  $next_execution = \Drupal::state()->get('cron_example.next_execution');
  $next_execution = !empty($next_execution) ? $next_execution : 0;
  if (REQUEST_TIME >= $next_execution) {
    // This is a silly example of a cron job.
    // It just makes it obvious that the job has run without
    // making any changes to your database.
    \Drupal::logger('cron_example')->notice('cron_example ran');
    if (\Drupal::state()->get('cron_example_show_status_message')) {
      drupal_set_message(t('cron_example executed at %time', ['%time' => date_iso8601(REQUEST_TIME)]));
      \Drupal::state()->set('cron_example_show_status_message', FALSE);
    }
    \Drupal::state()->set('cron_example.next_execution', REQUEST_TIME + $interval);
  }
}

Also, for more fine-tuned approach, you can use the Ultimate Cron module, which provides more fine-grained control for the cron jobs.

1

The best way to run cron every month is by adding the following command to your crontab.

0 0 1 * * wget -O - -q -t 1 http://CRON_URL

http://CRON_URL is replaced with a URL which is different for each Drupal version. For D8 it looks something like http://www.example.com/cron/. You can get this URL from Status report — Reports Administration > Reports > Status (/admin/reports/status)

For more info please visit https://www.drupal.org/docs/7/setting-up-cron-for-drupal/configuring-cron-jobs-using-the-cron-command

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