fitness/app/Http/Controllers/BlogController.php

<?php

namespace App\Http\Controllers;

use App\Models\Post;
use Illuminate\Http\Request;
use Illuminate\View\View;

class BlogController extends Controller
{
    public function index(Request $request): View
    {
        $q = trim((string) $request->query('q', ''));

        $posts = Post::query()
            ->published()
            ->with('author')
            ->when($q !== '', function ($qb) use ($q) {
                $qb->where(function ($sub) use ($q) {
                    $sub->where('title', 'like', "%{$q}%")
                        ->orWhere('excerpt', 'like', "%{$q}%");
                });
            })
            ->latest('published_at')
            ->paginate(9)
            ->withQueryString();

        return view('blog.index', [
            'posts' => $posts,
            'filters' => ['q' => $q],
        ]);
    }

    public function show(Post $post): View
    {
        abort_unless($post->is_published, 404);

        $post->load('author');

        $relatedPosts = Post::query()
            ->published()
            ->where('id', '!=', $post->id)
            ->latest('published_at')
            ->limit(3)
            ->get();

        return view('blog.show', compact('post', 'relatedPosts'));
    }
}