FatController.php

<?php

namespace foo\BarBundle\Controller;
// use statements ...

class FatController extends Controller
{
    /**
     * @Route("/", name="some_index_route")
     * @Template()
     */
    public function indexAction($limit)
    {
        $collection = $this->getDoctrine()->getRepository('Some:Model')->findFooOrderedByBar($limit);
        $somethingRelated = array();
        foreach ($collection as $model) {
            $somethingRelated[$model->getId()] = $this->doSomething($model);
        }

        return array('collection' => $collection, 'somethingRelated' => $somethingRelated);
    }

    /**
     * @Route("/edit/{id}", name="some_edit_route")
     * @Template()
     */
    public function updateAction(Request $request, $id)
    {
        $model = $this->loadModel($id);

        $form = $this->createForm('some_type', $model);

        if ($request->getMethod() == 'POST') {
            $form->bind($request);

            if ($form->isValid()) {
                $em = $this->getDoctrine()->getEntityManager();
                $em->persist($model);
                $em->flush();

                $message = \Swift_Message::newInstance()
                    ->setSubject('Foo Bar!')
                    ->setFrom('[email protected]')
                    ->setTo('[email protected]')
                    ->setBody('Some content');

                $this->get('mailer')->send($message);

                $this->get('event_dispatcher')->dispatch('some.update_event', new SomeUpdateEvent($model));

                $this->redirect($this->generateUrl('some_redirect_route', array('id' => $model->getId())));
            }
        }

        return array('model' => $model);
    }

    /**
     * @Route("/{id}", name="some_show_route", requirements={"id" = "\d+"})
     * @Template()
     */
    public function showAction($id)
    {
        $model = $this->loadModel($id);

        return array('model' => $model);
    }

    private function loadModel($id)
    {
        $model = $this->getDoctrine()->getRepository('Some:Model')->find($id);

        if (!$model) {
            throw $this->createNotFoundException(sprintf('omg this model could not be loaded: %s', $id));
        }

        return $model;
    }
}