nested php slim 3 middleware - php

Question

I am creating an API and need to implement the following functionality. Some roots need to be accessible to users that are:
List item
not loged in
logged in
logged in and are premium users
logged in and are premium users with x amount of points.
For this reason I chose to use slim groups. Mind you, I'm not sure that this is the proper usage for group middle ware, but this is what I did.
<?php
$ifa = function($request, $response, $next){
$a=true;
if ($a) {
$request = $request->withAttribute('foo', 'bar');
$response = $next($request, $response);
}
return $response;
};
$ifb = function($request, $response, $next){
$b=true;
if ($b) {
$response = $next($request, $response);
}
return $response;
};
$ifc = function($request, $response, $next){
$c=true;
if ($c) {
$response = $next($request, $response);
}
return $response;
};
$app->group('',function() use ($app, $ifb,$ifc){
$app->get('/home', 'AuthController:home')->setName('home');
$app->group('',function() use ($app,$ifc){
$app->get('/school', 'AuthController:school');
$app->group('',function() use ($app){
$app->get('/farm', 'AuthController:farm');
})->add($ifc);
})->add($ifb);
})->add($ifa);
I would like to separate my middleware code (named functions or classes) from my routes. Even though this set up currently works, I would prefer to work with classes, what would be a cleaner way of writing my code? I would appreciate any suggestions.

Answer 1

First $ifa can be simplified as
$ifa = function($request, $response, $next){
$request = $request->withAttribute('foo', 'bar');
return $next($request, $response);
};
$ifb and $ifc are useless and can be omitted and removed from route as they are essentially doing nothing (CMIIW).
To make it $ifa as class instead of anonymous function, you can declare it like this
<?php
class Ifa
{
public function __invoke($request, $response, $next)
{
$request = $request->withAttribute('foo', 'bar');
return $next($request, $response);
};
}
and in routes declaration
$app->group('/', function() {
//do something here
})->add(Ifa::class);