How can I set a message on the page I am `drupal-goto`ing towards?

Question

I have a page which makes certain verifications and needs to redirect the user in certain cases. In those cases, I want the destination page to show a message, but I can't get it to work. Here is my code:

if ($userNeedsToBeRedirected) {
  drupal_set_message(null, "You've been redirected because ...");
  drupal_goto('destination');
}

The redirection works, but the message doesn't appear. What can I do?

Note: I also tried the following:

if ($userNeedsToBeRedirected) {
  drupal_goto('destination', array(
    'query' => array(
      'message' => "You've been redirected because ..."
    )
  ));
}

and in the destination page:

if (isset($_GET['message'])) {
  drupal_set_message(null, $_GET['message']);
}

but is doesn't work either because (I believe) drupal_set_message is being called too late the the page creation process.

Answer 1

You are setting a NULL message in drupal_set_message, the correct syntax would be:

if ($userNeedsToBeRedirected) {
  drupal_set_message("You've been redirected because ...");
  drupal_goto('destination');
}

The second drupal_set_message $type parameter is for the message type:

• 'status'
• 'warning'
• 'error'