Limiting the max number on a per form basis, not per user basis

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it would be a great feature!

You could build this out manually with a little bit of work. In the additional submission code, try something like this:

  $count = db_result(db_query("SELECT count(*) FROM {webform_submissions} WHERE nid = %d", $node->nid));
  if ($count > 50) {
    $node->status = 0;
    node_save($node);
  }

This wouldn't be the perfect solution though because it'd make the entire form unaccessible by unpublishing it. We're working on a feature to enabled/disable submissions by role in #239343: No permission for 'create webform submission', but it's not yet finished. You could use the exact same approach, but disable submissions for all roles (effectively closing the form). So yes this is probably the right module, but the feature you need isn't finished yet.

I'm closing this issue, but I wanted to say that there is now a method to "Close" webforms from more submissions without unpublishing the node entirely.

  $count = db_result(db_query("SELECT count(*) FROM {webform_submissions} WHERE nid = %d", $node->nid));
  if ($count > 50) {
    $node->webform['roles'] = array();
    node_save($node);
  }

Disabling all the roles for a webform "closes" the form from further submission.

I tried this and it does not seem to work. If I have it change the status, it does change the status. It just doesn't "close" for further submissions.

- Shane

Make sure you're not User #1, who always has access to all forms.

I just did an upgrade from 5.-2.0 to 5.x-2.3 and now I see a listing of roles on the webform configuration page. I am going to guess that this will probably take care of the issue and if not, I will be sure to post back.

- Shane