Laravelでログイン前後の画面遷移を自由に設定してみる

Route::get('/', function () {
    return view('welcome');
});

Route::get('/test', function () { return view('samples.test');});

mkdir resources/views/samples
touch resources/views/samples/test.blade.php

class TestController extends Controller
{
    public function test()
    {
        return view('sample.test');
    }
}

use App\Http\Controllers\TestController;

//--------------------------中略--------------------------

Route::get('/test', [TestController::class, 'test'])->name('test');

Route::get('/', function () { return view('welcome'); });

Route::get('/', function () { return view('samples.test'); });

use App\Http\Controllers\TestController;

//--------------------------中略--------------------------

Route::get('/', [TestController::class, 'test'])->name('test');

//ログイン認証前の表示ビュー
Route::middleware(['guest'])->group(function () {
    Route::get('/', function () {
        return view('samples.test');
    });
});

//ログイン認証後の表示ビュー
Route::middleware([
    'auth:sanctum',
    config('jetstream.auth_session'),
    'verified'
])->group(function () {
    Route::get('/product', function () {
        return view('products.index');
    })->name('products.index');
});

//public const HOME = '/dashboard';
public const HOME = '/product';

# app/Http/Middleware/UserCheck.phpを作成
php artisan make:middleware UserCheck

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;  //追加

class UserCheck
{   
    public function handle(Request $request, Closure $next)
    {
        //-------------------------追加（ここから）-------------------------
        if(Auth::check()){
            //ログインユーザーの情報を取得
            $user = Auth::user();
            if($user->id <= 3){
                return $next($request);
            }else{
                return redirect()->route('products.index');
            }
        }else{
            return redirect()->route('samples.test');
        }
        //-------------------------追加（ここまで）-------------------------
    }
}

protected $routeMiddleware = [
    'auth' => \App\Http\Middleware\Authenticate::class,
    'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
    'auth.session' => \Illuminate\Session\Middleware\AuthenticateSession::class,
    'cache.headers' => \Illuminate\Http\Middleware\SetCacheHeaders::class,
    'can' => \Illuminate\Auth\Middleware\Authorize::class,
    'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
    'password.confirm' => \Illuminate\Auth\Middleware\RequirePassword::class,
    'signed' => \App\Http\Middleware\ValidateSignature::class,
    'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
    'verified' => \Illuminate\Auth\Middleware\EnsureEmailIsVerified::class,
    'usercheck' => \App\Http\Middleware\UserCheck::class, //追加
];

//ログイン認証前の表示ビュー
Route::middleware(['guest'])->group(function () {
    Route::get('/', function () {
        return view('samples.test');
    })->name('samples.test');
});

//ログイン認証後の表示ビュー
Route::middleware([
    'auth:sanctum',
    config('jetstream.auth_session'),
    'verified'
])->group(function () {
    Route::get('/product', function () {
        return view('products.index');
    })->name('products.index');
});

//------------------------------追加(ここから)------------------------------
//特定ユーザー(IDが3以下)のみ入れるページ
Route::middleware(['usercheck'])->group(function(){
    Route::get('/admin', function () {
        return view('admins.admin');
    })->name('admins.admin');   
});
//------------------------------追加(ここまで)------------------------------

#samples/testビューを作成(ログイン認証前)
mkdir resources/views/samples
touch resources/views/samples/test.blade.php

#products/indexビューを作成(ログイン認証後)
mkdir resources/views/products
touch resources/views/products/index.blade.php

#admins/adminビューを作成(特定ユーザー、IDが3以下)
mkdir resources/views/admins
touch resources/views/admins/admin.blade.php

<h1>ログイン認証前のページ</h1>

<h1>ログイン認証後のページ</h1>

<h1>Adminページ</h1>
<p>あなたのユーザーIDは3以下です。</p>

Route::middleware(['guest'])->group(function(){Route::get('/',function(){...});

Route::middleware([
    'auth:sanctum',
    config('jetstream.auth_session'),
    'verified'
])->group(function () {
    Route::get('/XXXX', function () {
        ....
    })->name('YYYY');
});

public const HOME = '/XXXX';

php artisan make:middleware XXXX

if(Auth::check()){
    $user = Auth::user();
    if(条件){
        return $next($request);
    }else{
        //return redirect()->route('閲覧権限なしユーザーの遷移先');
    }
}else{
    //return redirect()->route('非ログインユーザーの遷移先');
}

protected $routeMiddleware = [ 
    'YYYY' => \App\Http\Middleware\XXXX::class,
];

Route::middleware(['XXXX'])->group(function(){
    Route::get('/YYYY', function(){....})->name('ZZZZ'); 
});