Slim 2 to Slim 3 method error - php

Question

I am trying to convert a slim 2 project to slim 3.
I am stucking with a problem.
When I call my method:
http://localhost:8000/task_manager/v1/tasks
I get the next error:
Catchable fatal error: Argument 1 passed to authenticate() must
be an instance of Slim\Route, instance of
Slim\Http\Request given in
C:\wamp64\www\task_manager\v1\index.php on line 42.
How could I fix it? Some help will be appreciated.
Here is my php code:
$app = new \Slim\App();
...
...
function authenticate(\Slim\Route $route) {
// Getting request headers
$headers = apache_request_headers();
$data = array();
$app = AppContainer::getInstance();
// Verifying Authorization Header
if (isset($headers['Authorization'])) {
$db = new DbHandler();
// get the api key
$api_key = $headers['Authorization'];
// validating api key
if (!$db->isValidApiKey($api_key)) {
// api key is not present in users table
$data["error"] = true;
$data["message"] = "Access Denied. Invalid Api key";
return echoRespnse(401, $data, $response);
//$app->stop();
return $response->withStatus(401)->withBody("Bad Request");
} else {
global $user_id;
// get user primary key id
$user_id = $db->getUserId($api_key);
}
} else {
// api key is missing in header
$data["error"] = true;
$data["message"] = "Api key is misssing";
return echoRespnse(400, $data, $response);
}
}
$app->get('/tasks', function (Request $request, Response $response) {
global $user_id;
$data = array();
$db = new DbHandler();
// fetching all user tasks
$result = $db->getAllUserTasks($user_id);
$data["error"] = false;
$data["tasks"] = array();
// looping through result and preparing tasks array
while ($task = $result->fetch_assoc()) {
$tmp = array();
$tmp["id"] = $task["id"];
$tmp["task"] = $task["task"];
$tmp["status"] = $task["status"];
$tmp["createdAt"] = $task["created_at"];
array_push($data["tasks"], $tmp);
}
return echoRespnse(200, $data, $response);
})->add('authenticate');

Answer 1

In Slim2 you could add middleware like this:
<?php
$aBitOfInfo = function (\Slim\Route $route) {
echo "Current route is " . $route->getName();
};
$app->get('/foo', $aBitOfInfo, function () {
echo "foo";
});
This is not possible in slim3: first the middleware must be added with the add method like this:
$app->get('/foo', function () {
echo "foo";
})->add($aBitOfInfo);
Secondly middleware doesn't have the \Slim\Route-Object as first parameter.
These are not the Request, Response and the callable of the next middleware. So this should be like this:
/**
* Example middleware closure
*
* #param \Psr\Http\Message\ServerRequestInterface $request PSR7 request
* #param \Psr\Http\Message\ResponseInterface $response PSR7 response
* #param callable $next Next middleware
*
* #return \Psr\Http\Message\ResponseInterface
*/
$aBitOfInfo = function ($request, $response, $next) {
$response->getBody()->write('BEFORE');
$response = $next($request, $response);
$response->getBody()->write('AFTER');
return $response;
};
(Source https://www.slimframework.com/docs/concepts/middleware.html)