Call to undefined method Joomla\CMS\Mail\MailTemplate::ClearAddresses()

Question

In my extensions updated for Joomla! 4.0 i use the method ClearAddresses(). In Joomla! 3.x the Joomla\CMS\Mail\Mail extended phpmailer class now in Joomla! 4.x the Joomla\CMS\Component\ComponentHelper\MailTemplate extends nothing and i don't have anymore access to ClearAddresses(), ClearCCs(), ClearBCCs() This is my code :

use Joomla\CMS\Mail\MailTemplate;

public static function send(MailTemplate $mailTemplate, array $receivers): bool
{
  $chunks = array_chunk($receivers, $emailRecipientCount);

    $success = true;

    foreach ($chunks as $emails)
    {
        if ($emailRecipientCount == 1 || $emailRecipientPrivacy == 'to')
        {
            $mailTemplate->ClearAddresses();
            $mailTemplate->addRecipient($emails);
        }
        elseif ($emailRecipientPrivacy == 'cc')
        {
            $mailTemplate->ClearCCs();
            $mailTemplate->addCC($emails);
        }
        else
        {
            $mailTemplate->ClearBCCs();
            $mailTemplate->addBCC($emails);
        }

        try
        {
            $result = $mailTemplate->Send();

            if ($result === false)
            {
                // Mail is turned off, or broken
                return false;
            }

            if (is_subclass_of($result, 'Exception'))
            {
                // Mail send is failed
                $success = false;
            }
        }
        catch (Exception $e)
        {
            $success = false;
            Log::add($e->getMessage(), Log::ERROR, 'kunena');
        }

        if (isset(static::$mailer_error_status))
        {
            $success = false;
            break;
        }
    }

    return $success;
}

So by what replacing ClearAddresses(), ClearCCs(), ClearBCCs() method here ?

Answer 1

The function is still in Joomla 4 as part of the PHPMailer code

../libraries/vendor/phpmailer/phpmailer/src/PHPMailer.php

In Joomla 3 it comes from

../libraries/vendor/phpmailer/phpmailer/class.phpmailer.php

You need to look at your extension and make any changes to find or USE the updated library.

Update...

Try adding this line to the top of the code you have included in your original post above or below the existing Use statement.

use PHPMailer\PHPMailer\PHPMailer