symfony 1.4中的Json 404

Question

I am building a json api. Formats are managed nicely via the routing.yml configuration file:

user_info:
  url: /users/:user_id
  class: sfRequestRoute
  param: { module: user, action: details, sf_format: json }
  requirements:
    user_id: \d+
    sf_method: [GET]

Now I would like to make sure that any request that is sent to my app will return a result in json format (example: "/dummy" should return an error in json). I am getting on track with the following default route at the end of the same file:

default:
  url: /*
  param: { sf_format: json }

When I route to an inexisting page or module, this renders correctly a json... Error! The html page generated was a 404, now with this routing I get a 500 (server error). How can I keep a similar behaviour as the one I had in the default html page, just changing the rendering into a json output?

EDIT - following 1Ed instructions

So I edited my factories.yml, created a default module in my api project, there in my default actions added the executeError404 function mentioned below... Then I Set up the corresponding Error404Success.php page...

For some reason, I still need the routes, which I modified to avoid the :module and :action keywords:

default_index:
  url:   /:a

default:
  url: /:a/:b/*

And here there I am ! My 404 page comes in json format for the whole api :) Thanks a lot !

Answer 1

This default route will execute the index action of the default module (by default). You should add a indexSuccess.json.php template file to the default module or modify the default/index action to return a json response early.

If you just want to return a 404 every time if this default route matches you can change the default action to error404 in factories.yml:

all:
  routing:
    class: sfPatternRouting
    param:
      generate_shortest_url:            true
      extra_parameters_as_query_string: true
      default_action:                   error404

Or you can set the request format of the default 404 action explicitly to json like this

public function executeError404(sfWebRequest $request)
{
  $request->setRequestFormat('json');
}

and you can remove the default route.

I recommend NOT to use these kind of default routes as they make really hard to keep track of all possible URL-s to the site. You should create a separate route for each particular action or use route collections.