Access app in class in Slim Framework 3

Question

Im having trouble understanding how to access the instance of Slim when a route is in a seperate class than index.php

When using Slim Framework 2 I always used the follo

Answer 1

With Slim 3 RC2 and onwards given a route of:

$app->get('/test','MyController:test');

The CallableResolver will look for a key in the DIC called 'MyController' and expect that to return the controller, so you can register with the DIC like this:

// Register controller with DIC
$container = $app->getContainer();
$container['MyController'] = function ($c) {
    return new MyController($c->get('rdb'));   
}

// Define controller as:
class MyController
{
    public function __construct($rdb) {
        $this->rdb = $rdb;
    }

    public function test($request,$response){
        // do something with $this->rdb
    }
}

Alternatively, if you don't register with the DIC, then the CallableResolver will pass the container to your constructor, so you can just create a controller like this:

class MyController
{
    public function __construct($container) {
        $this->rdb = $container->get('rdb');
    }

    public function test($request,$response){
        // do something with $this->rdb
    }
}