Send email outside Controller Action in Symfony2 - symfony

Question

I am using Symfony2 and FOSUserBundle
I have to send email using SwiftMailer in my mailer class which is not a controller or its action. I am showing what I have coded
<?php
namespace Blogger\Util;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
class FlockMailer {
public function SendEmail(){
$message = \Swift_Message::newInstance()
->setSubject('Hello Email')
->setFrom('send#example.com')
->setTo('to#example.com')
->setBody('testing email');
$this->get('mailer')->send($message);
}
}
But I am getting the following error
Fatal error: Call to undefined method Blogger\Util\FlockMailer::get() ....
How can I proceed?

Answer 1

EDIT: as i din't tested the code you should also specify the transport layer if you don't use the service container for getting the instance of the mailer. Look at: http://swiftmailer.org/docs/sending.html
You're doing it wrong. You basically want a service, not a class that extends Controller. It's not working because service container is not available in SendMail() function.
You have to inject the service container into your own custom helper for sending email. A few examples:
namespace Blogger\Util;
class MailHelper
{
protected $mailer;
public function __construct(\Swift_Mailer $mailer)
{
$this->mailer = $mailer;
}
public function sendEmail($from, $to, $body, $subject = '')
{
$message = \Swift_Message::newInstance()
->setSubject($subject)
->setFrom($from)
->setTo($to)
->setBody($body);
$this->mailer->send($message);
}
}
To use it in a controller action:
services:
mail_helper:
class: namespace Blogger\Util\MailHelper
arguments: ['#mailer']
public function sendAction(/* params here */)
{
$this->get('mail_helper')->sendEmail($from, $to, $body);
}
Or elsewhere without accessing the service container:
class WhateverClass
{
public function whateverFunction()
{
$helper = new MailerHelper(new \Swift_Mailer);
$helper->sendEmail($from, $to, $body);
}
}
Or in a custom service accessing the container:
namespace Acme\HelloBundle\Service;
class MyService
{
protected $container;
public function setContainer($container) { $this->container = $container; }
public function aFunction()
{
$helper = $this->container->get('mail_helper');
// Send email
}
}
services:
my_service:
class: namespace Acme\HelloBundle\Service\MyService
calls:
- [setContainer, ['#service_container']]

Answer 2

Just forget about the setter and the getter:
$transport = \Swift_MailTransport::newInstance();
$mailer = \Swift_Mailer::newInstance($transport);
$helper = new MailHelper($mailer);
$helper->sendEmail($from, $to, $body,$subject);
That worked for me with the MailHelper called from a listener method.