[Zend Expressive] Testing $response->getParsedBody()

expressive.php

// AbstractRestController from https://blog.alejandrocelaya.com/2016/06/24/dispatch-rest-like-requests-with-a-single-controller-class-in-zend-expressive/

use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;
use Zend\Stratigility\MiddlewareInterface;
use App\Rest\AbstractRestController;

final class MyRestController extends AbstractRestController
{
	// GET Method
	// URL: localhost/employees
	public function get(Request $request, Response $response, callable $out = null)
    {
    	$id = $request->getAttribute(self::IDENTIFIER_NAME); //it returns the expected string
    	
        // with some code after
    }
    
    // POST Method
    // URL: localhost/employees
    // Body Params: x-www-form-urlencoded
    // id = 1
    // name = Joe
    public function create(Request $request, Response $response, callable $out = null)
    {
    	$data = $request->getParsedBody(); 
    	var_dump($data); //it returns the expected array ['id'= 1, 'name' = 'Joe']
    }
    
    // PUT Method
    // URL: localhost/employees/1
    // Body Params: x-www-form-urlencoded
    // id = 1
    // name = Joey
    public function update(Request $request, Response $response, callable $out = null)
    {
    	$data = $request->getParsedBody();
    	var_dump($data); // returns empty array
    	
    	$content = $request->getBody()->getContents();
    	var_dump($content); // returns string 'id=1&name=joey'
    	
    }
}