Using Traits for injecting Services/Helpers

gistfile1.php

<?php
// helper trait
namespace Foo\Controller\Helper;

trait RedirectorHelper
{
    private $_redirectorHelper;

    public function injectRedirectorHelper(RedirectorHelper $helper)
    {
        $this->_redirectorHelper = $helper;
    }
}

// some controller
namespace Foo;

use Foo\Controller\Helper\RedirectorHelper;

class BarController
{
    use RedirectorHelper;
    use SomeOtherService;

    public function execute(Request $request, Response $response)
    {
        // do sth ...
        if ($success) {
            $this->_redirectorHelper->redirect('/baz');
        }
    }
}