cakephp-tools/src/Mailer/MailerAwareTrait.php

<?php
/**
 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 * @link          http://cakephp.org CakePHP(tm) Project
 * @since         3.1.0
 * @license       http://www.opensource.org/licenses/mit-license.php MIT License
 */
namespace Tools\Mailer;

use Cake\Core\App;
use Cake\Mailer\Exception\MissingMailerException;

/**
 * Provides functionality for loading mailer classes
 * onto properties of the host object.
 *
 * Example users of this trait are Cake\Controller\Controller and
 * Cake\Console\Shell.
 */
trait MailerAwareTrait {

	/**
	 * Returns a mailer instance.
	 *
	 * @param string $name Mailer's name.
	 * @param \Cake\Mailer\Email|null $email Email instance.
	 * @return \Cake\Mailer\Mailer
	 * @throws \Cake\Mailer\Exception\MissingMailerException if undefined mailer class.
	 */
	public function getMailer($name, Email $email = null) {
		if ($email === null) {
			$email = new Email();
		}

		$className = App::className($name, 'Mailer', 'Mailer');

		if (empty($className)) {
			throw new MissingMailerException(compact('name'));
		}

		return new $className($email);
	}

}