Sexy routing (avoiding magical annotations)

routing.yml

some_edit_route:
    path: /{id}/edit
    defaults:
        _controller: AmceDemoBundle:Thin:edit
        _template: AmceDemoBundle:Thin:edit.html.twig
    methods: [GET]
    requirements:
        id: \d+

some_update_route:
    path: /{id}/edit
    defaults:
        _controller: AmceDemoBundle:Thin:update
        _template: AmceDemoBundle:Thin:edit.html.twig
    methods: [POST]
    requirements:
        id: \d+

ThinController.php

<?php

class ThinController
{
    public function editAction(Request $request, $_template)
    {
        $id = $request->attributes->get('id');
        $form = $this->get('model.form_handler')->createForm($id);
        
        return $this->render($_template, array('form' => $form));
    }
    
    public function updateAction(Request $request, $_template)
    {
        $id = $request->attributes->get('id');
        $form = $this->get('model.form_handler')->createForm($id);
        $form->handleRequest($request);
        
        try {
            $entity = $form->getData();
            $this->get('model.persistence_handler')->update($entity);
        } catch (HandlerValidationException $e) {
            // some error handling here
        }
        
        return $this->render($_template, array('form' => $form));
    }
}