auto-responder with login details in Symfony - symfony

Question

Here is the funcion im using
public function sendCredentialsEmailMessage(UserInterface $user)
{
$template = 'Emails/afterRegister.html.twig';
$rendered = $this->templating->render($template, array(
'user' => $user,
));
$this->sendEmailMessage($rendered,
$this->parameters['from_email']['confirmation'], $user->getEmail());
}
Basically I want the auto-mailer to send my template along with the login name. When i create a new user nothing is being sent. My email template is located in app>resources>views>emails>
and this controller file is located in src>myname>userbundle>mailer>
protected function sendEmailMessage($renderedTemplate, $fromEmail, $toEmail)
{
// Render the email, use the first line as the subject, and the rest as the body
$renderedLines = explode("\n", trim($renderedTemplate));
$subject = array_shift($renderedLines);
$body = implode("\n", $renderedLines);
$message = (new \Swift_Message())
->setSubject($subject)
->setFrom($fromEmail)
->setTo($toEmail)
->setBody($body);
$this->mailer->send($message);
}
Also this works for sure:
public function sendResettingEmailMessage(UserInterface $user)
{
$template = $this->parameters['resetting.template'];
$url = $this->router->generate('fos_user_resetting_reset', array('token' => $user->getConfirmationToken()),
UrlGeneratorInterface::ABSOLUTE_URL);
$rendered = $this->templating->render($template, array(
'user' => $user,
'confirmationUrl' => $url,
));
$this->sendEmailMessageCustom($rendered, $this->from, (string)$user->getEmail(),'Password resseting');
}