Laravel 02 ルーティング・コントローラ・Blade

// routes/web.php
use App\Http\Controllers\PostController;
use Illuminate\Support\Facades\Route;
 
Route::get('/', fn () => view('welcome'));             // その場で画面を返す
Route::get('/posts', [PostController::class, 'index']); // コントローラへ
Route::get('/posts/{post}', [PostController::class, 'show'])->name('posts.show');
Route::post('/posts', [PostController::class, 'store'])->middleware('auth');

Route::resource('posts', PostController::class);

// app/Http/Controllers/PostController.php
class PostController extends Controller
{
    public function index()
    {
        $posts = Post::with('user')->latest()->paginate(20); // モデルで取得
        return view('posts.index', compact('posts'));      // ビューへ渡す
    }
 
    public function show(Post $post) // ← ルートモデルバインディング
    {
        return view('posts.show', ['post' => $post]);
    }
 
    public function store(StorePostRequest $request) // ← 入力チェック済み(04章)
    {
        $post = $request->user()->posts()->create($request->validated());
        return redirect()->route('posts.show', $post);
    }
}

use Illuminate\Routing\Attributes\Controllers\Middleware;
use Illuminate\Routing\Attributes\Controllers\Authorize;
 
#[Middleware('auth')]
class CommentController
{
    #[Authorize('create', [Comment::class, 'post'])]
    public function store(Post $post) { /* ... */ }
}

{{-- resources/views/posts/index.blade.php --}}
<x-layouts.app title="記事一覧">
  @if (session('status'))
    <p class="notice">{{ session('status') }}</p>
  @endif
 
  <ul>
    @forelse ($posts as $post)
      <li><a href="{{ route('posts.show', $post) }}">{{ $post->title }}</a>({{ $post->user->name }})</li>
    @empty
      <li>記事はまだありません</li>
    @endforelse
  </ul>
 
  {{ $posts->links() }} {{-- ページ送り --}}
 
  @auth
    <form method="POST" action="{{ route('posts.store') }}">
      @csrf {{-- 必須:CSRF トークン --}}
      <input name="title" value="{{ old('title') }}">
      @error('title') <p class="error">{{ $message }}</p> @enderror
      <button>投稿</button>
    </form>
  @endauth
</x-layouts.app>