gistfile1.txt

/**
 * @Route("/mini-api")
 * @Method("POST")
 */
class ApiController extends Controller
{
    /**
     * @Route("/customer/create.{_format}", name="mini-api_customer_create", requirements={
            "_format" : "json"
     * })
     * @param Request $request
     * @return JsonResponse
     */
    function createCustomerAction(Request $request)
    {
        $form = $this->createFormBuilder()
            ->add('customerName', 'text', ['constraints' => [new NotBlank(), new Length(['min' => 3, 'max' => 128])]])
            ->getForm();
        $form->handleRequest($request);

        return new JsonResponse($form->getData());
    }
}