member_show:
  url:   /membres/profil/:id
  class: sfDoctrineRoute
  options: { model: sfGuardUser, type: object }
  param: { module: member, action: show }

public function executeShow(sfWebRequest $request)
{
  if($this->getUser()->isAuthenticated())
  {
    $this->member = $this->getRoute()->getObject();
  }
  else
  {
    $this->redirect('@homepage');
  }
}