Blocking Registration of other participant

Question

Using on line registration in CiviEvent, I can check the box 'Register multiple participants'. For an specific event I don't want that so I don't check that box.

when I log in before registration, I get the notice above the registration fields:

Welcome Betty Dolfing. (Not Betty Dolfing, or want to register a different person?)

and then I can click on the link to register a different person.

Question: I don't want this option that participants can register others as well and even have the opportunity to 'look up' people in CiviCMR. How can I get rid of that? It seems a default thing for logged in accounts. I'm using Drupal 7 with CiviCRM 4.6.22. I tried to switch on and off several permissions in Drupal but haven't found the solution yet.

Answer 1

To do the same, I use 2 Webforms :

• one public (authenticated users) which is limited to their own registration (existing contact hidden)
• one, almost identical, reserved to an administrative role which enables different persons registration.

You may need the permission per webform Module (https://www.drupal.org/project/permissions_per_webform)

Answer 2

I did found a different approach for removing option to registered additional member

I did by creating a Page run hook (civicrm Extension) with the below condition

function example_civicrm_pageRun(&$page){
$pageName = $page->getVar('_name');
if ($pageName == 'CRM_Event_Page_EventInfo') {
     $allStatus = CRM_Core_Session::singleton()->getStatus();
     foreach ($allStatus as $key => $status) {
         if (str_contains($status['text'], 'already registered for this event') && $status['type'] == 'alert') {
CRM_Core_Session::singleton()->getStatus(TRUE);
CRM_Core_Session::singleton()->setStatus("<h3'>It looks like you are already registered for this event.</h3>");
}}}}

I hope this helps !!!

Answer 3

This won't prevent the link from being offered, but you can deny permission once it's clicked (and use your own conditional logic) by implementing hook_civicrm_permission_check and checking for the cid=0 parameter:

function your_module_civicrm_permission_check($permission, &$granted) {
  if ($permission == 'register for events' && CRM_Utils_System::currentPath() == 'civicrm/event/register') {
    $decodedUrl = urldecode($_SERVER['REQUEST_URI']);
    $queryString = parse_url($decodedUrl, PHP_URL_QUERY);
    parse_str($queryString, $params);
    if (isset($params['cid']) && $params['cid'] == 0) {
      CRM_Core_Session::setStatus('Registering on behalf of others is not supported for this event');
      $granted = false;
    }
  }
}