How to find the route param from the top level middleware in Slim

Question

I'm trying to accomplish API versioning of the APIs I've written using Slim framework.

All my versioned APIs look like this:

$app->get('/:version/book/search', function() {...});

I'm trying to create an application wide Route Condition for this version as follows:

\Slim\Route::setDefaultConditions(array(
    'version' => 'v[3-6]'
));

So only the APIs with version number v3,v4,v5 and v6 should be allowed to get it.

My requirement is to store the exact version of the API call made in $app->version, and then do version specific code changes if needed for that. I have created a middleware which I added to the $app itself, so it gets executed for each API calls:

$app->add(new \GetVerMiddleware());

class GetVerMiddleware extends \Slim\Middleware
{
    public function call()
    {

        // HOW TO GET THE version route parameter??
        // ????
        $app->version = $version;
        $this->next->call();

    }
}

So I want to know how to get the route parameter version inside the GetVerMiddleware. Is it even possible to get that? I know how to get the entire route printed (link), but I'm interested only in the version parameter.

score 0 · Answer 1 · answered Feb 20 '16 at 13:05

OK, I've figured out the solution after some researching, the following link particularly helped:

Slim Framework forum

$app->add(new \GetVerMiddleware());

class GetVerMiddleware extends \Slim\Middleware
{
    public function call()
    {

        $this->app->hook('slim.before.dispatch', array($this, 'onBeforeDispatch'));
        $this->next->call();

    }

    public function onBeforeDispatch()
    {
        $route_params = $this->app->router()->getCurrentRoute()->getParam('version');
        $this->app->version = $version;
    }
}

I think the solution was pretty much there, apologies!

How to find the route param from the top level middleware in Slim

1 Answers1