word-salad/database/seeders/DatabaseSeeder.php

<?php

namespace Database\Seeders;

use App\Models\User;
use App\Models\Author;
use App\Models\Article;
use Illuminate\Database\Seeder;

class DatabaseSeeder extends Seeder
{
    /**
     * Seed the application's database.
     */
    public function run(): void
    {
        $test_user = User::factory()->create([
            'name' => 'Test User',
            'email' => 'test@example.com',
        ]);

        $test_author = Author::factory()->user($test_user)->create();

        Article::factory()->author($test_author)->count(30)->create();
    }
}