Backbone & Slim PHP - Access-Control-Allow-Headers - Can GET information, can't POST it?

Question

I\'m using Backbone and the Slim PHP framework. I\'m trying to post information to my API, however Access-Control-Allow-Headers keeps causing me problems...

My conso

Answer 1

CorsSlim helped me. https://github.com/palanik/CorsSlim

 "*",
"exposeHeaders" => array("Content-Type", "X-Requested-With", "X-authentication", "X-client"),
"allowMethods" => array('GET', 'POST', 'PUT', 'DELETE', 'OPTIONS'));
$cors = new \CorsSlim\CorsSlim($corsOptions);
$app->add($cors);