rest - Symfony2 FOSRestBundle ParamFetcher JSON error -

i have symfony2 setup fosrestbundle , i'm using paramfetcher.

i have route has requirements it's parameters , i'd show error messages api-user, in current setup error messages not shown in production , in development way extensive.

parameter requirements

offset requirement \d+ description result offset default 0  limit requirement \d+ description result limit count default 100 

annotations:

/**  * list of users can limited result count , offset.  *  * max 30 users per request allowed.  *  * @apidoc(  *  resource=true,  *  description="load list of users",  *  statuscodes={  *      200="returned when successful",  *      400="bad user input",  *      500="in case of server error,"  *  }  * )  *  * @view()  *  * @param paramfetcher $paramfetcher  * @param int $offset integer offset (requires param_fetcher_listener: force)  * @param int $limit integer result limit (requires param_fetcher_listener: force)  * @queryparam(name="offset", description="result offset", default="0",  *     requirements="\d+", strict=true, nullable=true)  * @queryparam(name="limit", description="result limit count", default="30",  *     requirements="\d+", strict=true, nullable=true)  *  * @return array response array  */ 

making request in production mode:

request url /events.json?offset=strangetext&limit=huh!? response headers [expand]  400 bad request  date: tue, 02 jun 2015 20:45:15 gmt server: apache/2 x-powered-by: php/5.5.25 vary: user-agent content-type: application/json cache-control: no-cache connection: close content-length: 47 response body [raw] ▿{   "error": ▿{     "code": 400,     "message": "bad request"   } } 

i tried adding error_message param rule, not lead nice error message.

what should nice error message api end user?

we doing implementing exceptionwrapperhandlerinterface, see e.g. https://symfony.com/doc/current/bundles/fosrestbundle/2-the-view-layer.html#forms-and-views:

namespace my\bundle\handler;  class myexceptionwrapperhandler implements exceptionwrapperhandlerinterface { /**  * {@inheritdoc}  */ public function wrap($data) {     return new myexceptionwrapper($data); } } 

you'll have access lot's of information in $data. check param validation exception.

we're not using annotation param validation extending exceptionwrapper can e.g. achieve in our code:

throw new httpexception( 400, 'my custom message' );