laravel9 middleware not loaded when frontend and admin are seperated - laravel

Question

I am doing the separation of frontend and admin. After several days of studying, It seems ok now. My github: https://github.com/ronrun/laravel-multiauth
Currently there are 4 versions.
There are 3 branches, the branch 9.x_two-tables has two version.
commit: frontend and admin login can login separately
The structure:
app\Http\Controller\Admin\Auth\LoginController.php
app\Http\Controller\Admin\DashboardController.php
app\Http\Controller\Auth\LoginController.php
app\Http\Controller\HomeController.php
commit: more seperation!
app\Admin\Console
app\Admin\Exceptions
app\Admin\Http\Controllers
app\Admin\Http\Middleware
app\Admin\Providers
app\Frontend\Console
app\Frontend\Exceptions
app\Frontend\Http\Controllers
app\Frontend\Http\Middleware
app\Frontend\Providers
app\Models
In short, it's
app\Admin
app\Frontend
app\Models
During the studying process, lots of questions I want to ask. Now all seems working fine. But I still have questions about the final commit: more seperation!
Question: Many files inside app\Frontend not loaded, only app\Admin's files are used.
The two files:
app\Admin\Http\Middleware\Authenticate.php
app\Frontend\Http\Middleware\Authenticate.php
I expected that when I am not logged in, but visite a page should login, the Authenticate's redirectTo() should do the redirect work. But only Admin's Authenticate.php is loaded. I clear the content of Frontend's Authenticate.php, make it compeletly empty, NO ERRORS. But If I clear the content of Admin's Authenticate.php, it says this class cannot found.
I found the RedirectIfAuthenticated.php is the same. Then I delete frontend's middleware folder, still working fine, no errors.
Then I delete app\Frontend\Console, Exceptions, no errors. The login functions of Frontend and Admin both working. But app\Frontend\Providers cannot be deleted, or error shows.
bootstrap\app.php
$app->singleton(
Illuminate\Contracts\Http\Kernel::class,
App\Frontend\Http\Kernel::class
);
$app->singleton(
Illuminate\Contracts\Console\Kernel::class,
App\Frontend\Console\Kernel::class
);
$app->singleton(
Illuminate\Contracts\Debug\ExceptionHandler::class,
App\Frontend\Exceptions\Handler::class
);
$app->singleton(
Illuminate\Contracts\Http\Kernel::class,
App\Admin\Http\Kernel::class
);
$app->singleton(
Illuminate\Contracts\Console\Kernel::class,
App\Admin\Console\Kernel::class
);
$app->singleton(
Illuminate\Contracts\Debug\ExceptionHandler::class,
App\Admin\Exceptions\Handler::class
);
Why does it only loads files inside app\Admin ?
Why no errors, login logout functions still work, when many Frontend files are deleted?
Any suggestions to improve the codes, I'd appreciate it.

Answer 1

To keep the frontend and admin separate, basically need:
separate routes file (say web.php, api.php & admin.php)
separate redirectTo routes in RedirectIfAuthenticated
separate redirectTo routes in Authenticate
To achieve that keep all default middleware & providers under app folder -
|-app
|-Http
|-Middleware
-Authenticate.php
-EncryptCookies.php
-PreventRequestsDuringMaintenance.php
-RedirectIfAuthenticated.php
-TrimStrings.php
-TrustHosts.php
-TrustProxies.php
-VerifyCsrfToken.php
|-Providers
-AppServiceProvider.php
-AuthServiceProvider.php
-BroadcastServiceProvider.php
-EventServiceProvider.php
-RouteServiceProvider.php
|-Frontend
|-Http
|-Controllers
|-FrontendControllers
|-Middleware
|-FrontendSpecificMiddleware (if any)
|-Requests
|-FrontendFormRequests (if any)
|-Languages
|-Other
|-Admin
|-Http
|-Controllers
|-AdminControllers
|-Middleware
|-AdminSpecificMiddleware (if any)
|-Requests
|-AdminFormRequests (if any)
|-Languages
|-Other
|-routes
|-web.php
To load routes, in App\Providers\RouteServiceProvider
$this->routes(function () {
Route::middleware('api')
->prefix('api')
->group(base_path('routes/api.php'));
Route::middleware('web')
->group(base_path('routes/web.php'));
Route::middleware('web')
->prefix('admin')
->as('admin.')
->group(app_path('Admin/routes/web.php'));
});
To set the redirect route for successful authentication
<?php
namespace App\Http\Middleware;
use App\Providers\RouteServiceProvider;
use Closure;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
class RedirectIfAuthenticated
{
/**
* Handle an incoming request.
*
* #param \Illuminate\Http\Request $request
* #param \Closure(\Illuminate\Http\Request): (\Illuminate\Http\Response|\Illuminate\Http\RedirectResponse) $next
* #param string|null ...$guards
* #return \Illuminate\Http\Response|\Illuminate\Http\RedirectResponse
*/
public function handle(Request $request, Closure $next, ...$guards)
{
$guards = empty($guards) ? [null] : $guards;
foreach ($guards as $guard) {
if (Auth::guard($guard)->check()) {
$prefix = $request->route()->getPrefix();
return $prefix == '/admin' ? redirect(route('admin.home') : redirect(RouteServiceProvider::HOME);
}
}
return $next($request);
}
}
To set redirect route for unsuccessful authentication
<?php
namespace App\Http\Middleware;
use Illuminate\Auth\Middleware\Authenticate as Middleware;
class Authenticate extends Middleware
{
/**
* Get the path the user should be redirected to when they are not authenticated.
*
* #param \Illuminate\Http\Request $request
* #return string|null
*/
protected function redirectTo($request)
{
if (! $request->expectsJson()) {
$prefix = $request->route()->getPrefix();
return $prefix == '/admin' ? route('admin.login') : route('login);
}
}
}
You can also have App\Frontend\FrontendServiceProvider and App\Admin\AdminServiceProvider if you want and register them under providers array in config/app.php
To summarise, take cue from Domain Driven Design (DDD) approach. You can read about DDD at:
Stitcher - Laravel Beyond Crud - Domain Oriented Laravel
Conciliating Laravel and DDD