gopher-proxy/docs/middleware-add.markdown

Add Middleware [middleware-add]

Use the Slim application's add() instance method to add new middleware to a Slim application. New middleware will surround previously added middleware, or the Slim application itself if no middleware has yet been added.

Example Middleware

class Secret_Middleware extends Slim_Middleware {
    public function call() {
        $app = $this->app;
        $req = $app->request();
        $res = $app->response();
        if ( $req->headers('X-Secret-Request') === 'The sun is shining' ) {
            $res->header('X-Secret-Response', 'But the ice is slippery');
        }
        $this->next->call();
    }
}

Add Middleware

$app = new Slim();
$app->add(new Secret_Middleware());
$app->get('/foo', function () use ($app) {
    //Do something
});
$app->run();

The Slim application's add() method accepts one argument: a middleware instance. If the middleware instance requires special configuration, it may implement its own constructor so that it may be configured before it is added to the Slim application.