Is it possible to access SlimApp or SlimContainer or Route in middleware?

[JanMikes]

Hi!

Let's have example code (from https://www.slimframework.com/docs/v3/cookbook/enable-cors.html):

$app->add(function($request, $response, $next) {
    $route = $request->getAttribute("route");

    $methods = [];

    if (!empty($route)) {
        $pattern = $route->getPattern();

        foreach ($this->router->getRoutes() as $route) {
            if ($pattern === $route->getPattern()) {
                $methods = array_merge_recursive($methods, $route->getMethods());
            }
        }
        //Methods holds all of the HTTP Verbs that a particular route handles.
    } else {
        $methods[] = $request->getMethod();
    }

    $response = $next($request, $response);


    return $response->withHeader("Access-Control-Allow-Methods", implode(",", $methods));
});

It is okay if i place this into my index.php where i have application in variable $application = $applicationFactory->create();

But i did not find if i wanted to create CORSMiddleware, register it as service and do it all via config.

The problem is $this->router - i do not have access to router in middleware service.

When debugging, i found out that Slim\Container is in the $next variable, should i use it? Any idea how to achieve it?

[ghost]

Not sure what $this is referring to. In case of that example, there is no obvious context other than the whole global context of the file.

[JanMikes]

It seems that it is the Slim\Container

[ghost]

I see.

One nasty solution can be something like this:

    /**
     * @var SlimApp
     */
    private $slimApplication;

    public function __construct(SlimApplicationFactory $applicationFactory)
    {
        $this->slimApplication = $applicationFactory->create();
    }


    public function dispatch()
    {
        $container = $this->slimApplication->getContainer();
        $this->slimApplication->add(...);
        // ...
        $this->slimApplication->run();
    }

I am not sure if an order of the middlewares will be correct but it can be the starting point of figuring it out. But its not nice.

[ghost]

Another approach can be to have SlimApp (its container respectively) somehow accessible from Nette DI and inject it into Middleware class.

[ghost]

(To be honest, I do not have a solution, I am just thinking loudly basically.)

[JanMikes]

Hi, getting back to this (I feel like a chess player, just taking a long time to think about next move 😄 ).

Another approach can be to have SlimApp (its container respectively) somehow accessible from Nette DI and inject it into Middleware class.

That could work and I would consider it to be quite a clean solution.

I will check and if I am able to do it, I will send a PR.

[ghost]

Quick idea: Router should be dependency of the SlimApp (created or provided into SlimAppFactory) Then router can be dependency of the cors middleware

[ghost]

// This may require changes in Slim lib itself.

[ghost]

#31

[Zemistr]

@JanMikes
I moved \Slim\Router to \BrandEmbassy\Slim\RouterFactory.
Now you can inject \Slim\Interfaces\RouterInterface where you need. 😉
Please check the changes inside #31

[JanMikes]

Nice, thank you!