Hi @KevinPfeifer,
Thanks for the additional tests! It’s good to know that there’s no bug in the CakePhp 4 core.
I’ll show you all my related code. This is my default routes.php:
<?php
/**
* Routes configuration.
*
* In this file, you set up routes to your controllers and their actions.
* Routes are very important mechanism that allows you to freely connect
* different URLs to chosen controllers and their actions (functions).
*
* It's loaded within the context of `Application::routes()` method which
* receives a `RouteBuilder` instance `$routes` as method argument.
*
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
use Cake\Routing\Route\DashedRoute;
use Cake\Routing\RouteBuilder;
return static function (RouteBuilder $routes) {
/*
* The default class to use for all routes
*
* The following route classes are supplied with CakePHP and are appropriate
* to set as the default:
*
* - Route
* - InflectedRoute
* - DashedRoute
*
* If no call is made to `Router::defaultRouteClass()`, the class used is
* `Route` (`Cake\Routing\Route\Route`)
*
* Note that `Route` does not do any inflections on URLs which will result in
* inconsistently cased URLs when used with `:plugin`, `:controller` and
* `:action` markers.
*/
$routes->setRouteClass(DashedRoute::class);
$routes->scope('/', function (RouteBuilder $root) {
$root->setExtensions(['json']);
$root->prefix('Admin', function (RouteBuilder $admin) {
$admin->redirect(
'/',
['controller' => 'Users', 'action' => 'index'],
['persist' => true]
);
/*$admin->scope('/articles', ['plugin' => 'Blog'], function (RouteBuilder $blog) { // deze moet nog veranderen
$blog->fallbacks(DashedRoute::class);
});*/
$admin->fallbacks(DashedRoute::class);
});
$root->scope('/nl', ['language' => 'nl'], function (RouteBuilder $language) {
$language->connect(
'/contact',
['controller' => 'Contact', 'action' => 'index']
);
$language->connect(
'/albums/album-{id}',
['controller' => 'Albums', 'action' => 'index']
)->setPatterns(['id' => '[0-9]+']
)->setPass(['id']);
$language->connect(
'/{slug}',
['controller' => 'Pages', 'action' => 'detail']
)->setPatterns(['slug' => '[0-9a-zA-Z-]+']
)->setPass(['slug']);
$language->connect(
'/',
['controller' => 'Home', 'action' => 'index']
);
});
/*
* Here, we are connecting '/' (base path) to a controller called 'Pages',
* its action called 'display', and we pass a param to select the view file
* to use (in this case, templates/Pages/home.php)...
*/
$root->connect('/', ['controller' => 'Pages', 'action' => 'display', 'home']);
/*
* ...and connect the rest of 'Pages' controller's URLs.
*/
//$builder->connect('/pages/*', 'Pages::display');
/*
* Connect catchall routes for all controllers.
*
* The `fallbacks` method is a shortcut for
*
* ```
* $builder->connect('/:controller', ['action' => 'index']);
* $builder->connect('/:controller/:action/*', []);
* ```
*
* You can remove these routes once you've connected the
* routes you want in your application.
*/
$root->fallbacks();
});
/*
* If you need a different set of middleware or none at all,
* open new scope and define routes there.
*
* ```
* $routes->scope('/api', function (RouteBuilder $builder) {
* // No $builder->applyMiddleware() here.
*
* // Parse specified extensions from URLs
* // $builder->setExtensions(['json', 'xml']);
*
* // Connect API actions here.
* });
* ```
*/
};
I have also a routes.php in my plugin (‘/plugins\Blog’):
<?php
use Cake\Routing\Route\DashedRoute;
use Cake\Routing\RouteBuilder;
return static function (Cake\Routing\RouteBuilder $routes) {
$routes->scope('/', function (RouteBuilder $root) {
$root->prefix('Admin', function (RouteBuilder $admin) { // hier er nog voor zorgen dat er niet 2x 'articles' in de slug staat ('/admin/articles/articles')
$admin->plugin('Blog', ['path' => '/articles'], function ($articles) {
$articles->fallbacks(DashedRoute::class);
});
/*$admin->scope('/articles', ['plugin' => 'Blog'], function (RouteBuilder $blog) { // deze moet nog veranderen
$blog->fallbacks(DashedRoute::class);
});*/
//$admin->fallbacks(DashedRoute::class);
});
$root->scope('/nl', ['language' => 'nl'], function (RouteBuilder $language) { // Met de tweede parameter zorg je dat 'language' ook in de request zit.
$language->scope('/blog', ['plugin' => 'Blog'], function (RouteBuilder $blog) {
$blog->connect(
'/',
['controller' => 'Articles', 'action' => 'overview']
);
$blog->connect(
'/{slug}',
['controller' => 'Articles', 'action' => 'detail']
)->setPatterns(['slug' => '[0-9a-zA-Z-]+']
)->setPass(['slug']);
$blog->scope('/categorieen', ['controller' => 'Categories'], function (RouteBuilder $categories) {
$categories->connect(
'/',
['action' => 'overview']
);
$categories->connect(
'/{slugs}',
['action' => 'detail']
)->setPatterns(['slugs' => '[\/0-9a-zA-Z-]+']
)->setPass(['slugs']);
});
$blog->connect(
'/tags/{slug}',
['controller' => 'Tags', 'action' => 'detail']
)->setPatterns(['slug' => '[0-9a-zA-Z-]+']
)->setPass(['slug']);
});
$language->connect(
'/{slug}',
['controller' => 'Pages', 'action' => 'index']
)->setPatterns(['slug' => '[0-9a-zA-Z-]+']
)->setPass(['slug']);
});
});
};
As you can see, the fallbacks line is included in the default route.php:
$root->fallbacks();
I’m also pretty sure thet the URL is mapped on the router. I see the right page when it’s in the address bar:
Another fact is that this deprecated code works for me:
$test = Router::getRouteCollection()->parse('/nl/blog/categorieen');
debug($test);
The last code outputs the right data:
I’ll dive further in the route.php code. Fingers crossed I found what I’m doing wrong.
Unless you know another possibility? 
