Access $app object from controller - php

Question

How to get access to $app inside a controller as the Slim 3.3 injects only the ContainerInterface?
Code to illustrate the question:
$app = new \Slim\App;
$app->get('/home', 'HomeController:get');
$app->run();
class HomeController {
private $ci;
public function _construct($ci) {
$this->ci = $ci;
}
public function get($request, $response) {
$this->ci->get(...);
// How to access $app and dependencies like $app->jwt?
}
}

Answer 1

This was a tough one.
Slim 3 heavily uses dependency injection, so you might want to use it too.
First inside your dependencies.php you need to grab the $app and throw it in a container to inject it to the Controller later.
$container['slim'] = function ($c) {
global $app;
return $app;
};
Then you got to inject it:
// Generic Controller
$container['App\Controllers\_Controller'] = function ($c) {
return new _Controller($c->get('slim'));
};
Now on your controller.php:
private $slim;
/**
* #param \Psr\Log\LoggerInterface $logger
* #param \App\DataAccess $dataaccess
* #param \App\$app $slim
*/
public function __construct(LoggerInterface $logger, _DataAccess $dataaccess, $slim)
{
$this->logger = $logger;
$this->dataaccess = $dataaccess;
$this->slim = $slim;
}
Now you just got call it like this:
$this->slim->doSomething();

Answer 2

You can make your own 'singleton' to mimic Slim::getInstance(); ;)
class Anorexic extends \Slim\App {
private static $_instance;
public static function getInstance(){
if(empty(self::$_instance){
self::$_instance = new self();
}
return self::$_instance;
}
}
Then change your initialization like this:
// $app = new \Slim\App;
$app = Anorexic::getInstance();
Now you can get your \Slim\App instance anywhere in your code by calling Anorexic::getInstance(); Ofcourse you should never try this at home :P