Render a view without asking.

gistfile1.aw

<?php
interface HearerInterface
{  
    public function retain($key, $value);
}

interface SelfExpressableInteface
{
    public function expressSelf(HearerInteface $hearer);
}

class Renderer implements HearerInterface
{
   public function render()
   {
      /* render */
   }
/* other implementation */
}

class SomeModel implements SelfExpressableInterface
{
    private $_name;

    public function __construct($name)
    {
       $this->_name = $name;
    }

    public function expressSelf(HearerInteface $hearer)
    {
        $hearer->retain('some.identifier.name', $this->_name);
    }
}

$renderer = new  Renderer();
$model = new SomeModel('hoge');

$model->expressSelf($renderer);
$renderer->render();