Empty e-mail body using drupal_mail

Question

I'm using drupal_mail for sending eMails from a custom module. This is the code:

function changeme_node_update($node) {
...
$to = "[email protected]";
$from = "[email protected]";
$subject = 'sampletext ' . $nodedate;
$body = "Dear " . $user_name . "! \r\nSome more text\r\n\r\n" . $nodetitle . "\r\nDate:" . $nodedate . "\r\nTime:" . $nodetime . " h";
$body .= "\r\n\r\nSome more text here";

//call mail function
$params = array(
    'subject' => $subject,
    'body' => $body,
);
drupal_mail('changeme', 'information', $to, "de", $params, $from);
...
}



function changeme_mail($key, &$message, $params) {
  switch ($key) {
    case 'information':
      $message['subject'] = $params['subject'];
      $message['body'] = $params['body'];
    break;
    }
}

I'm receiving emails with the subject but the message is missing. Also, where to change the encoding?

Thanks!

Answer 1

Try this :

function changeme_mail($key, &$message, $params) {
  switch ($key) {
    case 'information':
      $message['subject'] = $params['subject'];
      $message['body'][] = $params['body'];
    break;
    }
}

$message['body'] is supposed to be an array as defined here so I changed $message['body'] to $message['body'][]

Answer 2

I was having the same issue. The following worked for me. The code below should replace what you have set in the case statement
$message['body'][] = check_plain(t($params['body']));

    function changeme_mail($key, &$message, $params) {
     switch ($key) {
       case 'information':
         $message['subject'] = $params['subject'];
         $message['body'][] = check_plain(t($params['body']));
       break;
      }
    }

Answer 3

The reason you are getting an empty string for body is that Drupal is expecting an array, not a string. In fact, the function that formats the message, DefaultMailSystem::format(), contains the following code.

  // Join the body array into one string.
  $message['body'] = implode("\n\n", $message['body']);
  // Convert any HTML to plain-text.
  $message['body'] = drupal_html_to_text($message['body']);
  // Wrap the mail body for sending.
  $message['body'] = drupal_wrap_mail($message['body']);

If you pass two strings to implode(), the function will return NULL, which (in the context of strings) is then converted to an empty string. (See one of the comments in the PHP documentation page.)