Routing and modules

Yes, I understand, but you have to define them.

If you work on app/controllers the routes work automatically without needing to define them.
If you work on modules/some_module/controllers you have to define the route.

I have tried your solution and does not work. Even the CI guide says the same, that controllers outside the main app folder won't work :/

I think the only solution is create a symlink from app/controllers to each module so
app/controllers/admin -> modules/admin/controllers
app/controllers/portal -> modules/portal/controllers
app/controllers/users -> modules/users/controllers

I don't see other way. 

What you wrote below, is what I want to avoid. The need to define every single route.

PHP Code:

<?php namespace Insitefx\Blog\Config;

/**
 * Insitefx/Name: routes file.
 */

$routes->group('', ['namespace' => 'Insitefx\Blog\Controllers'], function($routes)
{
    $routes->get('blog', 'Blog::index');
    $routes->get('blog/post/(:num)', 'Blog::post/$1');
    $routes->post('blog/add', 'Blog::add');
    $routes->get('blog/category/(:num)', 'Blog::category/$1');
});