Best practices for request parameters in GET/POST methods in Symfony

Question

What is the best practices for request a number of parameters in API URL and request a specific type for that.

For example I have the url: http://host/my_api/?param_1=p1&param_2=p2

Now I have in parameters.yml a parameter that say how many parameters I need to have in URL and in method I check if the parameters have a specific type that I need.

But I'm not sure if that is the best practice for request parameters. Is useful for me to know if a parameter is missing what is that for a specific error message.

Any advice or opinion? Thanks!

*I use FOSRestBundle for create an API URL.

Answer 1

if you want to stick to query-parameters you could add a simple "checkFunction", for example if you want your two parameters to be required you could do sth as simple like this in your controller

/**
*@View
*/
public function apiAction(Request $request)
{
    $this->checkRequiredParams($request);
    ...
}


private function checkRequiredParams($request){
    $required = ["param_1","param_2"];

     foreach ($required as $r) {
        if(!$request->get($r)){
            throw new AccessDeniedException("ACCESS DENIED - missing parameter $r ");
        }
     }
     return true;
}

so it throws an exception if a parameter is missing, in this function you could also test for pattern or typecheck the value dont forget to

 use Symfony\Component\Security\Core\Exception\AccessDeniedException;

if you want to make use of it