php - Silex variable mount point? -

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i have series of pages route definitions:

$app->get('/{region}/{instance}/events', 'myapp\eventscontroller::index'); $app->post('/{region}/{instance}/events', 'myapp\eventscontroller::add'); $app->get('/{region}/{instance}/event/{id}', 'myapp\eventscontroller::edit'); $app->post('/{region}/{instance}/event/{id}', 'myapp\eventscontroller::update');

i have eventscontroller class has have region , instance parameters 4 functions (index, add, edit, , update). i'm wondering if it's possible clean up, , possibly move region , instance values global $app object.

i'd love able do

$app->mount('/{region}/{instance}/', new myapp\eventscontrollerprovider());

and have eventscontrollerprovider validate region , instance variables, , map "event" routes on top of path, seems mount points can't contain variables (the controllerproviderinterface::connect() method doesn't allow parameters).

is there clean way this? thought of method, seems counter other routing mechanisms:

$app->get('/{region}/{instance}/{action}' function($region, $instance, $action) use ($app) {    if ($app['myapp.valid-region']($region) === false) return $app->abort(404);   if ($app['myapp.valid-instance']($instance) === false) return $app->abort(404);     switch ($action) {     case 'events':       $c = new myapp\eventscontroller();       return $c->index();   } });

years later, found solution. may not have existed then, now. mentioned in original question, controllerprovider doesn't have additional parameters can helpful, middleware can solve issue:

$app->mount('/{region}/{instance}/', new myapp\eventscontrollerprovider()) ->before(function(request $r, application $a) {   $region = $r->attributes->get('region');   $instance = $r->attributes->get('instance');   $regioninfo = $a['myregionservice']($region, $instance);   if ($regioninfo === false) {     return $a->abort(404, 'no such region');   }   $a['currentregioninfo'] = $regioninfo; });

now, controllers mounted under eventscontrollerprovider don't need validation on region/instance, since that's done beforehand (and 404 returned if there's problem). if controllers need know current region, can pull out of $a['currentregioninfo'], since have been set already. because middleware bound specific route collection, it's not called other routes defined in application.

the variables defined in url exposed on request object under attributes parameter. technically of controllers still region , instance parameters passed methods, there's no need now.


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