Setup changes

app/dependencies.php

@@ -6,13 +6,13 @@
 use App\Factories\RendererFactory;
 use DI\ContainerBuilder;
 use Psr\Log\LoggerInterface;
+use Slim\Views\PhpRenderer;
 
 return function (ContainerBuilder $containerBuilder) {
     $container = [];
 
     $container[LoggerInterface::class] = DI\factory(LoggerFactory::class);
-    $container['renderer'] = DI\factory(RendererFactory::class);
-    $container['PDO'] = DI\factory(PDOFactory::class);
-
+    $container[PhpRenderer::class] = DI\factory(RendererFactory::class);
+    $container[PDO::class] = DI\factory(PDOFactory::class);
     $containerBuilder->addDefinitions($container);
 };

app/routes.php

@@ -9,7 +9,7 @@
     $container = $app->getContainer();
 
     $app->get('/', function ($request, $response, $args) use ($container) {
-        $renderer = $container->get('renderer');
+        $renderer = $container->get('Slim\Views\PhpRenderer');
         return $renderer->render($response, "index.php", $args);
     });
 

app/settings.php

@@ -19,7 +19,7 @@
             ],
             'db' => [
                 'host' => 'mysql:host=127.0.0.1;',
-                'name' => 'dbname=example',
+                'name' => 'dbname=cheeses',
                 'user' => 'root',
                 'password' => 'password',
                 'debug' => true

src/Controllers/CoursesAPIController.php

@@ -12,7 +12,7 @@
 
 class CoursesAPIController
 {
-    protected CoursesModel $model;
+    private CoursesModel $model;
 
     // Here, the parameter is automatically supplied by the Dependency Injection Container based on the type hint
     public function __construct(CoursesModel $model)