How can i build dynamic urls with Symfony?

I have a simple article table with a id and title column.
I won’t to have a url like this.

/my-title-4
/:title-:id

Also if the title was changed it must redirect to the actual url.

Solution

add a new route to your routing.yml:

article_detail:
  url:     /:slug
  class:   sfDoctrineRoute
  options: { model: Article, type: object, method: getBySlug }
  param:   { module: offer, action: show }
  requirements:
    slug: .+-\d+
    sf_method: [get]

define getBySlug function in lib/model/doctrine/ArticleTable.class.php:

public function getBySlug(array $parameters)
{
  if(!preg_match('/\d+$/', $parameters['slug'], $matches))
  {
    return null;
  }
  list($id) = $matches;
 
  return $this->find($id);
}

and this code to your show action:

public function executeShow(sfWebRequest $request)
{
  $this->article = $this->getRoute()->getObject();
  $this->forward404Unless($this->article);
 
  if($request->getParameter('slug') != $this->article->getslug())
  {
    $this->redirect($this->generateUrl('article_detail', $this->article));
  }
}