function signup_node_admin_details_form_validate in Signup 5.2

File

./signup.module, line 1954

The Signup module (http://drupal.org/project/signup) manages replies to nodes. In particular, it's good for event management. Signup supports sending reminder emails and automatically closing signups for nodes with a start time, via the Event…

Code

function signup_node_admin_details_form_validate($form_id, $form_values) {
  $users = array_filter($form_values['users']);
  if (empty($users)) {
    form_set_error('', t('No users selected.'));
  }
}